xref: /external/google-cloud-java/java-optimization/proto-google-cloud-optimization-v1/src/main/java/com/google/cloud/optimization/v1/OptimizeToursValidationError.java

/*
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// Generated by the protocol buffer compiler.  DO NOT EDIT!
// source: google/cloud/optimization/v1/fleet_routing.proto

package com.google.cloud.optimization.v1;

/**
 *
 *
 * <pre>
 * Describes an error encountered when validating an `OptimizeToursRequest`.
 * </pre>
 *
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 */
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      @java.lang.Override
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        buildPartialOneofs(result);
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      private java.lang.Object indexOrKey_;

      public IndexOrKeyCase getIndexOrKeyCase() {
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      private int bitField0_;

      private java.lang.Object name_ = "";
      /**
       *
       *
       * <pre>
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       *
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       *
       *
       * <pre>
       * Name of the field, e.g., "vehicles".
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       *
       * <code>string name = 1;</code>
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          return b;
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      /**
       *
       *
       * <pre>
       * Name of the field, e.g., "vehicles".
       * </pre>
       *
       * <code>string name = 1;</code>
       *
       * @param value The name to set.
       * @return This builder for chaining.
       */
      public Builder setName(java.lang.String value) {
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          throw new NullPointerException();
        }
        name_ = value;
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
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      /**
       *
       *
       * <pre>
       * Name of the field, e.g., "vehicles".
       * </pre>
       *
       * <code>string name = 1;</code>
       *
       * @return This builder for chaining.
       */
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        name_ = getDefaultInstance().getName();
        bitField0_ = (bitField0_ & ~0x00000001);
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Name of the field, e.g., "vehicles".
       * </pre>
       *
       * <code>string name = 1;</code>
       *
       * @param value The bytes for name to set.
       * @return This builder for chaining.
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        name_ = value;
        bitField0_ |= 0x00000001;
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      /**
       *
       *
       * <pre>
       * Index of the field if repeated.
       * </pre>
       *
       * <code>int32 index = 2;</code>
       *
       * @return Whether the index field is set.
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      /**
       *
       *
       * <pre>
       * Index of the field if repeated.
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       *
       * <code>int32 index = 2;</code>
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      /**
       *
       *
       * <pre>
       * Index of the field if repeated.
       * </pre>
       *
       * <code>int32 index = 2;</code>
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       * @param value The index to set.
       * @return This builder for chaining.
       */
      public Builder setIndex(int value) {

        indexOrKeyCase_ = 2;
        indexOrKey_ = value;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Index of the field if repeated.
       * </pre>
       *
       * <code>int32 index = 2;</code>
       *
       * @return This builder for chaining.
       */
      public Builder clearIndex() {
        if (indexOrKeyCase_ == 2) {
          indexOrKeyCase_ = 0;
          indexOrKey_ = null;
          onChanged();
        }
        return this;
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      /**
       *
       *
       * <pre>
       * Key if the field is a map.
       * </pre>
       *
       * <code>string key = 4;</code>
       *
       * @return Whether the key field is set.
       */
      @java.lang.Override
      public boolean hasKey() {
        return indexOrKeyCase_ == 4;
      }
      /**
       *
       *
       * <pre>
       * Key if the field is a map.
       * </pre>
       *
       * <code>string key = 4;</code>
       *
       * @return The key.
       */
      @java.lang.Override
      public java.lang.String getKey() {
        java.lang.Object ref = "";
        if (indexOrKeyCase_ == 4) {
          ref = indexOrKey_;
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        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
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          return (java.lang.String) ref;
        }
      }
      /**
       *
       *
       * <pre>
       * Key if the field is a map.
       * </pre>
       *
       * <code>string key = 4;</code>
       *
       * @return The bytes for key.
       */
      @java.lang.Override
      public com.google.protobuf.ByteString getKeyBytes() {
        java.lang.Object ref = "";
        if (indexOrKeyCase_ == 4) {
          ref = indexOrKey_;
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        if (ref instanceof String) {
          com.google.protobuf.ByteString b =
              com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
          if (indexOrKeyCase_ == 4) {
            indexOrKey_ = b;
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          return b;
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          return (com.google.protobuf.ByteString) ref;
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      /**
       *
       *
       * <pre>
       * Key if the field is a map.
       * </pre>
       *
       * <code>string key = 4;</code>
       *
       * @param value The key to set.
       * @return This builder for chaining.
       */
      public Builder setKey(java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        indexOrKeyCase_ = 4;
        indexOrKey_ = value;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Key if the field is a map.
       * </pre>
       *
       * <code>string key = 4;</code>
       *
       * @return This builder for chaining.
       */
      public Builder clearKey() {
        if (indexOrKeyCase_ == 4) {
          indexOrKeyCase_ = 0;
          indexOrKey_ = null;
          onChanged();
        }
        return this;
      }
      /**
       *
       *
       * <pre>
       * Key if the field is a map.
       * </pre>
       *
       * <code>string key = 4;</code>
       *
       * @param value The bytes for key to set.
       * @return This builder for chaining.
       */
      public Builder setKeyBytes(com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);
        indexOrKeyCase_ = 4;
        indexOrKey_ = value;
        onChanged();
        return this;
      }

      private com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
          subField_;
      private com.google.protobuf.SingleFieldBuilderV3<
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              com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder>
          subFieldBuilder_;
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       *
       * @return Whether the subField field is set.
       */
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        return ((bitField0_ & 0x00000008) != 0);
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       *
       * @return The subField.
       */
      public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
          getSubField() {
        if (subFieldBuilder_ == null) {
          return subField_ == null
              ? com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
                  .getDefaultInstance()
              : subField_;
        } else {
          return subFieldBuilder_.getMessage();
        }
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       */
      public Builder setSubField(
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        if (subFieldBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          subField_ = value;
        } else {
          subFieldBuilder_.setMessage(value);
        }
        bitField0_ |= 0x00000008;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       */
      public Builder setSubField(
          com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
              builderForValue) {
        if (subFieldBuilder_ == null) {
          subField_ = builderForValue.build();
        } else {
          subFieldBuilder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000008;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       */
      public Builder mergeSubField(
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        if (subFieldBuilder_ == null) {
          if (((bitField0_ & 0x00000008) != 0)
              && subField_ != null
              && subField_
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                      .getDefaultInstance()) {
            getSubFieldBuilder().mergeFrom(value);
          } else {
            subField_ = value;
          }
        } else {
          subFieldBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000008;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       */
      public Builder clearSubField() {
        bitField0_ = (bitField0_ & ~0x00000008);
        subField_ = null;
        if (subFieldBuilder_ != null) {
          subFieldBuilder_.dispose();
          subFieldBuilder_ = null;
        }
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       */
      public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
          getSubFieldBuilder() {
        bitField0_ |= 0x00000008;
        onChanged();
        return getSubFieldFieldBuilder().getBuilder();
      }
      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
       * .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference sub_field = 3;
       * </code>
       */
      public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder
          getSubFieldOrBuilder() {
        if (subFieldBuilder_ != null) {
          return subFieldBuilder_.getMessageOrBuilder();
        } else {
          return subField_ == null
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      /**
       *
       *
       * <pre>
       * Recursively nested sub-field, if needed.
       * </pre>
       *
       * <code>
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       */
      private com.google.protobuf.SingleFieldBuilderV3<
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      public final Builder mergeUnknownFields(
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    }

    // @@protoc_insertion_point(class_scope:google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference)
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    static {
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    }

    private static final com.google.protobuf.Parser<FieldReference> PARSER =
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          public FieldReference parsePartialFrom(
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            Builder builder = newBuilder();
            try {
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            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
              throw e.setUnfinishedMessage(builder.buildPartial());
            } catch (com.google.protobuf.UninitializedMessageException e) {
              throw e.asInvalidProtocolBufferException()
                  .setUnfinishedMessage(builder.buildPartial());
            } catch (java.io.IOException e) {
              throw new com.google.protobuf.InvalidProtocolBufferException(e)
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            return builder.buildPartial();
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    public static com.google.protobuf.Parser<FieldReference> parser() {
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    }

    @java.lang.Override
    public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
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      return DEFAULT_INSTANCE;
    }
  }

  public static final int CODE_FIELD_NUMBER = 1;
  private int code_ = 0;
  /**
   *
   *
   * <pre>
   * A validation error is defined by the pair (`code`, `display_name`) which
   * are always present.
   * Other fields (below) provide more context about the error.
   * *MULTIPLE ERRORS*:
   * When there are multiple errors, the validation process tries to output
   * several of them. Much like a compiler, this is an imperfect process. Some
   * validation errors will be "fatal", meaning that they stop the entire
   * validation process. This is the case for `display_name="UNSPECIFIED"`
   * errors, among others. Some may cause the validation process to skip other
   * errors.
   * *STABILITY*:
   * `code` and `display_name` should be very stable. But new codes and
   * display names may appear over time, which may cause a given (invalid)
   * request to yield a different (`code`, `display_name`) pair because the new
   * error hid the old one (see "MULTIPLE ERRORS").
   * *REFERENCE*: A list of all (code, name) pairs:
   * * UNSPECIFIED = 0;
   * * VALIDATION_TIMEOUT_ERROR = 10; Validation couldn't be completed within
   * the deadline.
   * * REQUEST_OPTIONS_ERROR = 12;
   *     * REQUEST_OPTIONS_INVALID_SOLVING_MODE = 1201;
   *     * REQUEST_OPTIONS_INVALID_MAX_VALIDATION_ERRORS = 1203;
   *     * REQUEST_OPTIONS_INVALID_GEODESIC_METERS_PER_SECOND = 1204;
   *     * REQUEST_OPTIONS_GEODESIC_METERS_PER_SECOND_TOO_SMALL = 1205;
   *     * REQUEST_OPTIONS_MISSING_GEODESIC_METERS_PER_SECOND = 1206;
   *     * REQUEST_OPTIONS_POPULATE_PATHFINDER_TRIPS_AND_GEODESIC_DISTANCE
   *       = 1207;
   *     * REQUEST_OPTIONS_COST_MODEL_OPTIONS_AND_GEODESIC_DISTANCE = 1208;
   *     * REQUEST_OPTIONS_TRAVEL_MODE_INCOMPATIBLE_WITH_TRAFFIC = 1211;
   *     * REQUEST_OPTIONS_MULTIPLE_TRAFFIC_FLAVORS = 1212;
   *     * REQUEST_OPTIONS_INVALID_TRAFFIC_FLAVOR = 1213;
   *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITHOUT_GLOBAL_START_TIME = 1214;
   *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITH_PRECEDENCES = 1215;
   *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_MODE_INVALID = 1216;
   *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_ENABLED_WITHOUT_TRAFFIC = 1217;
   * * INJECTED_SOLUTION_ERROR = 20;
   *     * INJECTED_SOLUTION_MISSING_LABEL = 2000;
   *     * INJECTED_SOLUTION_DUPLICATE_LABEL = 2001;
   *     * INJECTED_SOLUTION_AMBIGUOUS_INDEX = 2002;
   *     * INJECTED_SOLUTION_INFEASIBLE_AFTER_GETTING_TRAVEL_TIMES = 2003;
   *     * INJECTED_SOLUTION_TRANSITION_INCONSISTENT_WITH_ACTUAL_TRAVEL = 2004;
   *     * INJECTED_SOLUTION_CONCURRENT_SOLUTION_TYPES = 2005;
   *     * INJECTED_SOLUTION_MORE_THAN_ONE_PER_TYPE = 2006;
   *     * INJECTED_SOLUTION_REFRESH_WITHOUT_POPULATE = 2008;
   * * SHIPMENT_MODEL_ERROR = 22;
   *     * SHIPMENT_MODEL_TOO_LARGE = 2200;
   *     * SHIPMENT_MODEL_TOO_MANY_CAPACITY_TYPES = 2201;
   *     * SHIPMENT_MODEL_GLOBAL_START_TIME_NEGATIVE_OR_NAN = 2202;
   *     * SHIPMENT_MODEL_GLOBAL_END_TIME_TOO_LARGE_OR_NAN = 2203;
   *     * SHIPMENT_MODEL_GLOBAL_START_TIME_AFTER_GLOBAL_END_TIME = 2204;
   *     * SHIPMENT_MODEL_GLOBAL_DURATION_TOO_LONG = 2205;
   *     * SHIPMENT_MODEL_MAX_ACTIVE_VEHICLES_NOT_POSITIVE = 2206;
   *     * SHIPMENT_MODEL_DURATION_MATRIX_TOO_LARGE = 2207;
   * * INDEX_ERROR = 24;
   * * TAG_ERROR = 26;
   * * TIME_WINDOW_ERROR = 28;
   *     * TIME_WINDOW_INVALID_START_TIME = 2800;
   *     * TIME_WINDOW_INVALID_END_TIME = 2801;
   *     * TIME_WINDOW_INVALID_SOFT_START_TIME = 2802;
   *     * TIME_WINDOW_INVALID_SOFT_END_TIME = 2803;
   *     * TIME_WINDOW_OUTSIDE_GLOBAL_TIME_WINDOW = 2804;
   *     * TIME_WINDOW_START_TIME_AFTER_END_TIME = 2805;
   *     * TIME_WINDOW_INVALID_COST_PER_HOUR_BEFORE_SOFT_START_TIME = 2806;
   *     * TIME_WINDOW_INVALID_COST_PER_HOUR_AFTER_SOFT_END_TIME = 2807;
   *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_WITHOUT_SOFT_START_TIME
   *       = 2808;
   *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_WITHOUT_SOFT_END_TIME = 2809;
   *     * TIME_WINDOW_SOFT_START_TIME_WITHOUT_COST_BEFORE_SOFT_START_TIME
   *       = 2810;
   *     * TIME_WINDOW_SOFT_END_TIME_WITHOUT_COST_AFTER_SOFT_END_TIME = 2811;
   *     * TIME_WINDOW_OVERLAPPING_ADJACENT_OR_EARLIER_THAN_PREVIOUS = 2812;
   *     * TIME_WINDOW_START_TIME_AFTER_SOFT_START_TIME = 2813;
   *     * TIME_WINDOW_SOFT_START_TIME_AFTER_END_TIME = 2814;
   *     * TIME_WINDOW_START_TIME_AFTER_SOFT_END_TIME = 2815;
   *     * TIME_WINDOW_SOFT_END_TIME_AFTER_END_TIME = 2816;
   *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_SET_AND_MULTIPLE_WINDOWS
   *       = 2817;
   *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_SET_AND_MULTIPLE_WINDOWS = 2818;
   *     * TRANSITION_ATTRIBUTES_ERROR = 30;
   *     * TRANSITION_ATTRIBUTES_INVALID_COST = 3000;
   *     * TRANSITION_ATTRIBUTES_INVALID_COST_PER_KILOMETER = 3001;
   *     * TRANSITION_ATTRIBUTES_DUPLICATE_TAG_PAIR = 3002;
   *     * TRANSITION_ATTRIBUTES_DISTANCE_LIMIT_MAX_METERS_UNSUPPORTED = 3003;
   *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_SOURCE_TAGS = 3004;
   *     * TRANSITION_ATTRIBUTES_CONFLICTING_SOURCE_TAGS_FIELDS = 3005;
   *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_DESTINATION_TAGS = 3006;
   *     * TRANSITION_ATTRIBUTES_CONFLICTING_DESTINATION_TAGS_FIELDS = 3007;
   *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_NEGATIVE_OR_NAN = 3008;
   *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_EXCEEDS_GLOBAL_DURATION = 3009;
   * * AMOUNT_ERROR = 31;
   *     * AMOUNT_NEGATIVE_VALUE = 3100;
   * * LOAD_LIMIT_ERROR = 33;
   *     * LOAD_LIMIT_INVALID_COST_ABOVE_SOFT_MAX = 3303;
   *     * LOAD_LIMIT_SOFT_MAX_WITHOUT_COST_ABOVE_SOFT_MAX = 3304;
   *     * LOAD_LIMIT_COST_ABOVE_SOFT_MAX_WITHOUT_SOFT_MAX = 3305;
   *     * LOAD_LIMIT_NEGATIVE_SOFT_MAX = 3306;
   *     * LOAD_LIMIT_MIXED_DEMAND_TYPE = 3307;
   *     * LOAD_LIMIT_MAX_LOAD_NEGATIVE_VALUE = 3308;
   *     * LOAD_LIMIT_SOFT_MAX_ABOVE_MAX = 3309;
   * * INTERVAL_ERROR = 34;
   *     * INTERVAL_MIN_EXCEEDS_MAX = 3401;
   *     * INTERVAL_NEGATIVE_MIN = 3402;
   *     * INTERVAL_NEGATIVE_MAX = 3403;
   *     * INTERVAL_MIN_EXCEEDS_CAPACITY = 3404;
   *     * INTERVAL_MAX_EXCEEDS_CAPACITY = 3405;
   * * DISTANCE_LIMIT_ERROR = 36;
   *     * DISTANCE_LIMIT_INVALID_COST_AFTER_SOFT_MAX = 3601;
   *     * DISTANCE_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3602;
   *     * DISTANCE_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3603;
   *     * DISTANCE_LIMIT_NEGATIVE_MAX = 3604;
   *     * DISTANCE_LIMIT_NEGATIVE_SOFT_MAX = 3605;
   *     * DISTANCE_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3606;
   * * DURATION_LIMIT_ERROR = 38;
   *     * DURATION_LIMIT_MAX_DURATION_NEGATIVE_OR_NAN = 3800;
   *     * DURATION_LIMIT_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3801;
   *     * DURATION_LIMIT_INVALID_COST_PER_HOUR_AFTER_SOFT_MAX = 3802;
   *     * DURATION_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3803;
   *     * DURATION_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3804;
   *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3805;
   *     * DURATION_LIMIT_INVALID_COST_AFTER_QUADRATIC_SOFT_MAX = 3806;
   *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_COST_PER_SQUARE_HOUR
   *       = 3807;
   *     * DURATION_LIMIT_COST_PER_SQUARE_HOUR_WITHOUT_QUADRATIC_SOFT_MAX
   *       = 3808;
   *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_MAX = 3809;
   *     * DURATION_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3810;
   *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_LARGER_THAN_MAX = 3811;
   *     * DURATION_LIMIT_DIFF_BETWEEN_MAX_AND_QUADRATIC_SOFT_MAX_TOO_LARGE
   *       = 3812;
   *     * DURATION_LIMIT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3813;
   *     * DURATION_LIMIT_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3814;
   *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION
   *       = 3815;
   * * SHIPMENT_ERROR = 40;
   *     * SHIPMENT_PD_LIMIT_WITHOUT_PICKUP_AND_DELIVERY = 4014;
   *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_NEGATIVE_OR_NAN = 4000;
   *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION
   *       = 4001;
   *     * SHIPMENT_PD_RELATIVE_DETOUR_LIMIT_INVALID = 4015;
   *     * SHIPMENT_PD_DETOUR_LIMIT_AND_EXTRA_VISIT_DURATION = 4016;
   *     * SHIPMENT_PD_TIME_LIMIT_DURATION_NEGATIVE_OR_NAN = 4002;
   *     * SHIPMENT_PD_TIME_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4003;
   *     * SHIPMENT_EMPTY_SHIPMENT_TYPE = 4004;
   *     * SHIPMENT_NO_PICKUP_NO_DELIVERY = 4005;
   *     * SHIPMENT_INVALID_PENALTY_COST = 4006;
   *     * SHIPMENT_ALLOWED_VEHICLE_INDEX_OUT_OF_BOUNDS = 4007;
   *     * SHIPMENT_DUPLICATE_ALLOWED_VEHICLE_INDEX = 4008;
   *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITHOUT_INDEX = 4009;
   *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITH_INDEX = 4010;
   *     * SHIPMENT_INVALID_COST_FOR_VEHICLE = 4011;
   *     * SHIPMENT_COST_FOR_VEHICLE_INDEX_OUT_OF_BOUNDS = 4012;
   *     * SHIPMENT_DUPLICATE_COST_FOR_VEHICLE_INDEX = 4013;
   * * VEHICLE_ERROR = 42;
   *     * VEHICLE_EMPTY_REQUIRED_OPERATOR_TYPE = 4200;
   *     * VEHICLE_DUPLICATE_REQUIRED_OPERATOR_TYPE = 4201;
   *     * VEHICLE_NO_OPERATOR_WITH_REQUIRED_OPERATOR_TYPE = 4202;
   *     * VEHICLE_EMPTY_START_TAG = 4203;
   *     * VEHICLE_DUPLICATE_START_TAG = 4204;
   *     * VEHICLE_EMPTY_END_TAG = 4205;
   *     * VEHICLE_DUPLICATE_END_TAG = 4206;
   *     * VEHICLE_EXTRA_VISIT_DURATION_NEGATIVE_OR_NAN = 4207;
   *     * VEHICLE_EXTRA_VISIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4208;
   *     * VEHICLE_EXTRA_VISIT_DURATION_EMPTY_KEY = 4209;
   *     * VEHICLE_FIRST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4210;
   *     * VEHICLE_FIRST_SHIPMENT_IGNORED = 4211;
   *     * VEHICLE_FIRST_SHIPMENT_NOT_BOUND = 4212;
   *     * VEHICLE_LAST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4213;
   *     * VEHICLE_LAST_SHIPMENT_IGNORED = 4214;
   *     * VEHICLE_LAST_SHIPMENT_NOT_BOUND = 4215;
   *     * VEHICLE_IGNORED_WITH_USED_IF_ROUTE_IS_EMPTY = 4216;
   *     * VEHICLE_INVALID_COST_PER_KILOMETER = 4217;
   *     * VEHICLE_INVALID_COST_PER_HOUR = 4218;
   *     * VEHICLE_INVALID_COST_PER_TRAVELED_HOUR = 4219;
   *     * VEHICLE_INVALID_FIXED_COST = 4220;
   *     * VEHICLE_INVALID_TRAVEL_DURATION_MULTIPLE = 4221;
   *     * VEHICLE_TRAVEL_DURATION_MULTIPLE_WITH_SHIPMENT_PD_DETOUR_LIMITS
   *       = 4223;
   *     * VEHICLE_MATRIX_INDEX_WITH_SHIPMENT_PD_DETOUR_LIMITS = 4224;
   *     * VEHICLE_MINIMUM_DURATION_LONGER_THAN_DURATION_LIMIT = 4222;
   * * VISIT_REQUEST_ERROR = 44;
   *     * VISIT_REQUEST_EMPTY_TAG = 4400;
   *     * VISIT_REQUEST_DUPLICATE_TAG = 4401;
   *     * VISIT_REQUEST_DURATION_NEGATIVE_OR_NAN = 4404;
   *     * VISIT_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4405;
   * * PRECEDENCE_ERROR = 46;
   * * BREAK_ERROR = 48;
   *     * BREAK_RULE_EMPTY = 4800;
   *     * BREAK_REQUEST_UNSPECIFIED_DURATION = 4801;
   *     * BREAK_REQUEST_UNSPECIFIED_EARLIEST_START_TIME = 4802;
   *     * BREAK_REQUEST_UNSPECIFIED_LATEST_START_TIME = 4803;
   *     * BREAK_REQUEST_DURATION_NEGATIVE_OR_NAN = 4804; = 4804;
   *     * BREAK_REQUEST_LATEST_START_TIME_BEFORE_EARLIEST_START_TIME = 4805;
   *     * BREAK_REQUEST_EARLIEST_START_TIME_BEFORE_GLOBAL_START_TIME = 4806;
   *     * BREAK_REQUEST_LATEST_END_TIME_AFTER_GLOBAL_END_TIME = 4807;
   *     * BREAK_REQUEST_NON_SCHEDULABLE = 4808;
   *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_NEGATIVE_OR_NAN = 4809;
   *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_NEGATIVE_OR_NAN = 4810;
   *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION = 4811;
   *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION
   *       = 4812;
   *     * BREAK_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4813;
   *     * BREAK_FREQUENCY_MISSING_MAX_INTER_BREAK_DURATION = 4814;
   *     * BREAK_FREQUENCY_MISSING_MIN_BREAK_DURATION = 4815;
   * * SHIPMENT_TYPE_INCOMPATIBILITY_ERROR = 50;
   *     * SHIPMENT_TYPE_INCOMPATIBILITY_EMPTY_TYPE = 5001;
   *     * SHIPMENT_TYPE_INCOMPATIBILITY_LESS_THAN_TWO_TYPES = 5002;
   *     * SHIPMENT_TYPE_INCOMPATIBILITY_DUPLICATE_TYPE = 5003;
   *     * SHIPMENT_TYPE_INCOMPATIBILITY_INVALID_INCOMPATIBILITY_MODE = 5004;
   *     * SHIPMENT_TYPE_INCOMPATIBILITY_TOO_MANY_INCOMPATIBILITIES = 5005;
   * * SHIPMENT_TYPE_REQUIREMENT_ERROR = 52;
   *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE = 52001;
   *     * SHIPMENT_TYPE_REQUIREMENT_NO_DEPENDENT_TYPE = 52002;
   *     * SHIPMENT_TYPE_REQUIREMENT_INVALID_REQUIREMENT_MODE = 52003;
   *     * SHIPMENT_TYPE_REQUIREMENT_TOO_MANY_REQUIREMENTS = 52004;
   *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_REQUIRED_TYPE = 52005;
   *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_REQUIRED_TYPE = 52006;
   *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE_FOUND = 52007;
   *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_DEPENDENT_TYPE = 52008;
   *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_DEPENDENT_TYPE = 52009;
   *     * SHIPMENT_TYPE_REQUIREMENT_SELF_DEPENDENT_TYPE = 52010;
   *     * SHIPMENT_TYPE_REQUIREMENT_GRAPH_HAS_CYCLES = 52011;
   * * VEHICLE_OPERATOR_ERROR = 54;
   *     * VEHICLE_OPERATOR_EMPTY_TYPE = 5400;
   *     * VEHICLE_OPERATOR_MULTIPLE_START_TIME_WINDOWS = 5401;
   *     * VEHICLE_OPERATOR_SOFT_START_TIME_WINDOW = 5402;
   *     * VEHICLE_OPERATOR_MULTIPLE_END_TIME_WINDOWS = 5403;
   *     * VEHICLE_OPERATOR_SOFT_END_TIME_WINDOW = 5404;
   * * DURATION_SECONDS_MATRIX_ERROR = 56;
   *     * DURATION_SECONDS_MATRIX_DURATION_NEGATIVE_OR_NAN = 5600;
   *     * DURATION_SECONDS_MATRIX_DURATION_EXCEEDS_GLOBAL_DURATION = 5601;
   * </pre>
   *
   * <code>int32 code = 1;</code>
   *
   * @return The code.
   */
  @java.lang.Override
  public int getCode() {
    return code_;
  }

  public static final int DISPLAY_NAME_FIELD_NUMBER = 2;

  @SuppressWarnings("serial")
  private volatile java.lang.Object displayName_ = "";
  /**
   *
   *
   * <pre>
   * The error display name.
   * </pre>
   *
   * <code>string display_name = 2;</code>
   *
   * @return The displayName.
   */
  @java.lang.Override
  public java.lang.String getDisplayName() {
    java.lang.Object ref = displayName_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      displayName_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * The error display name.
   * </pre>
   *
   * <code>string display_name = 2;</code>
   *
   * @return The bytes for displayName.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getDisplayNameBytes() {
    java.lang.Object ref = displayName_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      displayName_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int FIELDS_FIELD_NUMBER = 3;

  @SuppressWarnings("serial")
  private java.util.List<
          com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference>
      fields_;
  /**
   *
   *
   * <pre>
   * An error context may involve 0, 1 (most of the time) or more fields. For
   * example, referring to vehicle #4 and shipment #2's first pickup can be
   * done as follows:
   * ```
   * fields { name: "vehicles" index: 4}
   * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
   * ```
   * Note, however, that the cardinality of `fields` should not change for a
   * given error code.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
   * </code>
   */
  @java.lang.Override
  public java.util.List<
          com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference>
      getFieldsList() {
    return fields_;
  }
  /**
   *
   *
   * <pre>
   * An error context may involve 0, 1 (most of the time) or more fields. For
   * example, referring to vehicle #4 and shipment #2's first pickup can be
   * done as follows:
   * ```
   * fields { name: "vehicles" index: 4}
   * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
   * ```
   * Note, however, that the cardinality of `fields` should not change for a
   * given error code.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
   * </code>
   */
  @java.lang.Override
  public java.util.List<
          ? extends
              com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder>
      getFieldsOrBuilderList() {
    return fields_;
  }
  /**
   *
   *
   * <pre>
   * An error context may involve 0, 1 (most of the time) or more fields. For
   * example, referring to vehicle #4 and shipment #2's first pickup can be
   * done as follows:
   * ```
   * fields { name: "vehicles" index: 4}
   * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
   * ```
   * Note, however, that the cardinality of `fields` should not change for a
   * given error code.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
   * </code>
   */
  @java.lang.Override
  public int getFieldsCount() {
    return fields_.size();
  }
  /**
   *
   *
   * <pre>
   * An error context may involve 0, 1 (most of the time) or more fields. For
   * example, referring to vehicle #4 and shipment #2's first pickup can be
   * done as follows:
   * ```
   * fields { name: "vehicles" index: 4}
   * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
   * ```
   * Note, however, that the cardinality of `fields` should not change for a
   * given error code.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
   * </code>
   */
  @java.lang.Override
  public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference getFields(
      int index) {
    return fields_.get(index);
  }
  /**
   *
   *
   * <pre>
   * An error context may involve 0, 1 (most of the time) or more fields. For
   * example, referring to vehicle #4 and shipment #2's first pickup can be
   * done as follows:
   * ```
   * fields { name: "vehicles" index: 4}
   * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
   * ```
   * Note, however, that the cardinality of `fields` should not change for a
   * given error code.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
   * </code>
   */
  @java.lang.Override
  public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder
      getFieldsOrBuilder(int index) {
    return fields_.get(index);
  }

  public static final int ERROR_MESSAGE_FIELD_NUMBER = 4;

  @SuppressWarnings("serial")
  private volatile java.lang.Object errorMessage_ = "";
  /**
   *
   *
   * <pre>
   * Human-readable string describing the error. There is a 1:1 mapping
   * between `code` and `error_message` (when code != "UNSPECIFIED").
   * *STABILITY*: Not stable: the error message associated to a given `code` may
   * change (hopefully to clarify it) over time. Please rely on the
   * `display_name` and `code` instead.
   * </pre>
   *
   * <code>string error_message = 4;</code>
   *
   * @return The errorMessage.
   */
  @java.lang.Override
  public java.lang.String getErrorMessage() {
    java.lang.Object ref = errorMessage_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      errorMessage_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * Human-readable string describing the error. There is a 1:1 mapping
   * between `code` and `error_message` (when code != "UNSPECIFIED").
   * *STABILITY*: Not stable: the error message associated to a given `code` may
   * change (hopefully to clarify it) over time. Please rely on the
   * `display_name` and `code` instead.
   * </pre>
   *
   * <code>string error_message = 4;</code>
   *
   * @return The bytes for errorMessage.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getErrorMessageBytes() {
    java.lang.Object ref = errorMessage_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      errorMessage_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int OFFENDING_VALUES_FIELD_NUMBER = 5;

  @SuppressWarnings("serial")
  private volatile java.lang.Object offendingValues_ = "";
  /**
   *
   *
   * <pre>
   * May contain the value(s) of the field(s). This is not always available. You
   * should absolutely not rely on it and use it only for manual model
   * debugging.
   * </pre>
   *
   * <code>string offending_values = 5;</code>
   *
   * @return The offendingValues.
   */
  @java.lang.Override
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    /**
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     * When there are multiple errors, the validation process tries to output
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     * validation process. This is the case for `display_name="UNSPECIFIED"`
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     * display names may appear over time, which may cause a given (invalid)
     * request to yield a different (`code`, `display_name`) pair because the new
     * error hid the old one (see "MULTIPLE ERRORS").
     * *REFERENCE*: A list of all (code, name) pairs:
     * * UNSPECIFIED = 0;
     * * VALIDATION_TIMEOUT_ERROR = 10; Validation couldn't be completed within
     * the deadline.
     * * REQUEST_OPTIONS_ERROR = 12;
     *     * REQUEST_OPTIONS_INVALID_SOLVING_MODE = 1201;
     *     * REQUEST_OPTIONS_INVALID_MAX_VALIDATION_ERRORS = 1203;
     *     * REQUEST_OPTIONS_INVALID_GEODESIC_METERS_PER_SECOND = 1204;
     *     * REQUEST_OPTIONS_GEODESIC_METERS_PER_SECOND_TOO_SMALL = 1205;
     *     * REQUEST_OPTIONS_MISSING_GEODESIC_METERS_PER_SECOND = 1206;
     *     * REQUEST_OPTIONS_POPULATE_PATHFINDER_TRIPS_AND_GEODESIC_DISTANCE
     *       = 1207;
     *     * REQUEST_OPTIONS_COST_MODEL_OPTIONS_AND_GEODESIC_DISTANCE = 1208;
     *     * REQUEST_OPTIONS_TRAVEL_MODE_INCOMPATIBLE_WITH_TRAFFIC = 1211;
     *     * REQUEST_OPTIONS_MULTIPLE_TRAFFIC_FLAVORS = 1212;
     *     * REQUEST_OPTIONS_INVALID_TRAFFIC_FLAVOR = 1213;
     *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITHOUT_GLOBAL_START_TIME = 1214;
     *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITH_PRECEDENCES = 1215;
     *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_MODE_INVALID = 1216;
     *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_ENABLED_WITHOUT_TRAFFIC = 1217;
     * * INJECTED_SOLUTION_ERROR = 20;
     *     * INJECTED_SOLUTION_MISSING_LABEL = 2000;
     *     * INJECTED_SOLUTION_DUPLICATE_LABEL = 2001;
     *     * INJECTED_SOLUTION_AMBIGUOUS_INDEX = 2002;
     *     * INJECTED_SOLUTION_INFEASIBLE_AFTER_GETTING_TRAVEL_TIMES = 2003;
     *     * INJECTED_SOLUTION_TRANSITION_INCONSISTENT_WITH_ACTUAL_TRAVEL = 2004;
     *     * INJECTED_SOLUTION_CONCURRENT_SOLUTION_TYPES = 2005;
     *     * INJECTED_SOLUTION_MORE_THAN_ONE_PER_TYPE = 2006;
     *     * INJECTED_SOLUTION_REFRESH_WITHOUT_POPULATE = 2008;
     * * SHIPMENT_MODEL_ERROR = 22;
     *     * SHIPMENT_MODEL_TOO_LARGE = 2200;
     *     * SHIPMENT_MODEL_TOO_MANY_CAPACITY_TYPES = 2201;
     *     * SHIPMENT_MODEL_GLOBAL_START_TIME_NEGATIVE_OR_NAN = 2202;
     *     * SHIPMENT_MODEL_GLOBAL_END_TIME_TOO_LARGE_OR_NAN = 2203;
     *     * SHIPMENT_MODEL_GLOBAL_START_TIME_AFTER_GLOBAL_END_TIME = 2204;
     *     * SHIPMENT_MODEL_GLOBAL_DURATION_TOO_LONG = 2205;
     *     * SHIPMENT_MODEL_MAX_ACTIVE_VEHICLES_NOT_POSITIVE = 2206;
     *     * SHIPMENT_MODEL_DURATION_MATRIX_TOO_LARGE = 2207;
     * * INDEX_ERROR = 24;
     * * TAG_ERROR = 26;
     * * TIME_WINDOW_ERROR = 28;
     *     * TIME_WINDOW_INVALID_START_TIME = 2800;
     *     * TIME_WINDOW_INVALID_END_TIME = 2801;
     *     * TIME_WINDOW_INVALID_SOFT_START_TIME = 2802;
     *     * TIME_WINDOW_INVALID_SOFT_END_TIME = 2803;
     *     * TIME_WINDOW_OUTSIDE_GLOBAL_TIME_WINDOW = 2804;
     *     * TIME_WINDOW_START_TIME_AFTER_END_TIME = 2805;
     *     * TIME_WINDOW_INVALID_COST_PER_HOUR_BEFORE_SOFT_START_TIME = 2806;
     *     * TIME_WINDOW_INVALID_COST_PER_HOUR_AFTER_SOFT_END_TIME = 2807;
     *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_WITHOUT_SOFT_START_TIME
     *       = 2808;
     *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_WITHOUT_SOFT_END_TIME = 2809;
     *     * TIME_WINDOW_SOFT_START_TIME_WITHOUT_COST_BEFORE_SOFT_START_TIME
     *       = 2810;
     *     * TIME_WINDOW_SOFT_END_TIME_WITHOUT_COST_AFTER_SOFT_END_TIME = 2811;
     *     * TIME_WINDOW_OVERLAPPING_ADJACENT_OR_EARLIER_THAN_PREVIOUS = 2812;
     *     * TIME_WINDOW_START_TIME_AFTER_SOFT_START_TIME = 2813;
     *     * TIME_WINDOW_SOFT_START_TIME_AFTER_END_TIME = 2814;
     *     * TIME_WINDOW_START_TIME_AFTER_SOFT_END_TIME = 2815;
     *     * TIME_WINDOW_SOFT_END_TIME_AFTER_END_TIME = 2816;
     *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_SET_AND_MULTIPLE_WINDOWS
     *       = 2817;
     *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_SET_AND_MULTIPLE_WINDOWS = 2818;
     *     * TRANSITION_ATTRIBUTES_ERROR = 30;
     *     * TRANSITION_ATTRIBUTES_INVALID_COST = 3000;
     *     * TRANSITION_ATTRIBUTES_INVALID_COST_PER_KILOMETER = 3001;
     *     * TRANSITION_ATTRIBUTES_DUPLICATE_TAG_PAIR = 3002;
     *     * TRANSITION_ATTRIBUTES_DISTANCE_LIMIT_MAX_METERS_UNSUPPORTED = 3003;
     *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_SOURCE_TAGS = 3004;
     *     * TRANSITION_ATTRIBUTES_CONFLICTING_SOURCE_TAGS_FIELDS = 3005;
     *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_DESTINATION_TAGS = 3006;
     *     * TRANSITION_ATTRIBUTES_CONFLICTING_DESTINATION_TAGS_FIELDS = 3007;
     *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_NEGATIVE_OR_NAN = 3008;
     *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_EXCEEDS_GLOBAL_DURATION = 3009;
     * * AMOUNT_ERROR = 31;
     *     * AMOUNT_NEGATIVE_VALUE = 3100;
     * * LOAD_LIMIT_ERROR = 33;
     *     * LOAD_LIMIT_INVALID_COST_ABOVE_SOFT_MAX = 3303;
     *     * LOAD_LIMIT_SOFT_MAX_WITHOUT_COST_ABOVE_SOFT_MAX = 3304;
     *     * LOAD_LIMIT_COST_ABOVE_SOFT_MAX_WITHOUT_SOFT_MAX = 3305;
     *     * LOAD_LIMIT_NEGATIVE_SOFT_MAX = 3306;
     *     * LOAD_LIMIT_MIXED_DEMAND_TYPE = 3307;
     *     * LOAD_LIMIT_MAX_LOAD_NEGATIVE_VALUE = 3308;
     *     * LOAD_LIMIT_SOFT_MAX_ABOVE_MAX = 3309;
     * * INTERVAL_ERROR = 34;
     *     * INTERVAL_MIN_EXCEEDS_MAX = 3401;
     *     * INTERVAL_NEGATIVE_MIN = 3402;
     *     * INTERVAL_NEGATIVE_MAX = 3403;
     *     * INTERVAL_MIN_EXCEEDS_CAPACITY = 3404;
     *     * INTERVAL_MAX_EXCEEDS_CAPACITY = 3405;
     * * DISTANCE_LIMIT_ERROR = 36;
     *     * DISTANCE_LIMIT_INVALID_COST_AFTER_SOFT_MAX = 3601;
     *     * DISTANCE_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3602;
     *     * DISTANCE_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3603;
     *     * DISTANCE_LIMIT_NEGATIVE_MAX = 3604;
     *     * DISTANCE_LIMIT_NEGATIVE_SOFT_MAX = 3605;
     *     * DISTANCE_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3606;
     * * DURATION_LIMIT_ERROR = 38;
     *     * DURATION_LIMIT_MAX_DURATION_NEGATIVE_OR_NAN = 3800;
     *     * DURATION_LIMIT_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3801;
     *     * DURATION_LIMIT_INVALID_COST_PER_HOUR_AFTER_SOFT_MAX = 3802;
     *     * DURATION_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3803;
     *     * DURATION_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3804;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3805;
     *     * DURATION_LIMIT_INVALID_COST_AFTER_QUADRATIC_SOFT_MAX = 3806;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_COST_PER_SQUARE_HOUR
     *       = 3807;
     *     * DURATION_LIMIT_COST_PER_SQUARE_HOUR_WITHOUT_QUADRATIC_SOFT_MAX
     *       = 3808;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_MAX = 3809;
     *     * DURATION_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3810;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_LARGER_THAN_MAX = 3811;
     *     * DURATION_LIMIT_DIFF_BETWEEN_MAX_AND_QUADRATIC_SOFT_MAX_TOO_LARGE
     *       = 3812;
     *     * DURATION_LIMIT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3813;
     *     * DURATION_LIMIT_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3814;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 3815;
     * * SHIPMENT_ERROR = 40;
     *     * SHIPMENT_PD_LIMIT_WITHOUT_PICKUP_AND_DELIVERY = 4014;
     *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_NEGATIVE_OR_NAN = 4000;
     *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 4001;
     *     * SHIPMENT_PD_RELATIVE_DETOUR_LIMIT_INVALID = 4015;
     *     * SHIPMENT_PD_DETOUR_LIMIT_AND_EXTRA_VISIT_DURATION = 4016;
     *     * SHIPMENT_PD_TIME_LIMIT_DURATION_NEGATIVE_OR_NAN = 4002;
     *     * SHIPMENT_PD_TIME_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4003;
     *     * SHIPMENT_EMPTY_SHIPMENT_TYPE = 4004;
     *     * SHIPMENT_NO_PICKUP_NO_DELIVERY = 4005;
     *     * SHIPMENT_INVALID_PENALTY_COST = 4006;
     *     * SHIPMENT_ALLOWED_VEHICLE_INDEX_OUT_OF_BOUNDS = 4007;
     *     * SHIPMENT_DUPLICATE_ALLOWED_VEHICLE_INDEX = 4008;
     *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITHOUT_INDEX = 4009;
     *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITH_INDEX = 4010;
     *     * SHIPMENT_INVALID_COST_FOR_VEHICLE = 4011;
     *     * SHIPMENT_COST_FOR_VEHICLE_INDEX_OUT_OF_BOUNDS = 4012;
     *     * SHIPMENT_DUPLICATE_COST_FOR_VEHICLE_INDEX = 4013;
     * * VEHICLE_ERROR = 42;
     *     * VEHICLE_EMPTY_REQUIRED_OPERATOR_TYPE = 4200;
     *     * VEHICLE_DUPLICATE_REQUIRED_OPERATOR_TYPE = 4201;
     *     * VEHICLE_NO_OPERATOR_WITH_REQUIRED_OPERATOR_TYPE = 4202;
     *     * VEHICLE_EMPTY_START_TAG = 4203;
     *     * VEHICLE_DUPLICATE_START_TAG = 4204;
     *     * VEHICLE_EMPTY_END_TAG = 4205;
     *     * VEHICLE_DUPLICATE_END_TAG = 4206;
     *     * VEHICLE_EXTRA_VISIT_DURATION_NEGATIVE_OR_NAN = 4207;
     *     * VEHICLE_EXTRA_VISIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4208;
     *     * VEHICLE_EXTRA_VISIT_DURATION_EMPTY_KEY = 4209;
     *     * VEHICLE_FIRST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4210;
     *     * VEHICLE_FIRST_SHIPMENT_IGNORED = 4211;
     *     * VEHICLE_FIRST_SHIPMENT_NOT_BOUND = 4212;
     *     * VEHICLE_LAST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4213;
     *     * VEHICLE_LAST_SHIPMENT_IGNORED = 4214;
     *     * VEHICLE_LAST_SHIPMENT_NOT_BOUND = 4215;
     *     * VEHICLE_IGNORED_WITH_USED_IF_ROUTE_IS_EMPTY = 4216;
     *     * VEHICLE_INVALID_COST_PER_KILOMETER = 4217;
     *     * VEHICLE_INVALID_COST_PER_HOUR = 4218;
     *     * VEHICLE_INVALID_COST_PER_TRAVELED_HOUR = 4219;
     *     * VEHICLE_INVALID_FIXED_COST = 4220;
     *     * VEHICLE_INVALID_TRAVEL_DURATION_MULTIPLE = 4221;
     *     * VEHICLE_TRAVEL_DURATION_MULTIPLE_WITH_SHIPMENT_PD_DETOUR_LIMITS
     *       = 4223;
     *     * VEHICLE_MATRIX_INDEX_WITH_SHIPMENT_PD_DETOUR_LIMITS = 4224;
     *     * VEHICLE_MINIMUM_DURATION_LONGER_THAN_DURATION_LIMIT = 4222;
     * * VISIT_REQUEST_ERROR = 44;
     *     * VISIT_REQUEST_EMPTY_TAG = 4400;
     *     * VISIT_REQUEST_DUPLICATE_TAG = 4401;
     *     * VISIT_REQUEST_DURATION_NEGATIVE_OR_NAN = 4404;
     *     * VISIT_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4405;
     * * PRECEDENCE_ERROR = 46;
     * * BREAK_ERROR = 48;
     *     * BREAK_RULE_EMPTY = 4800;
     *     * BREAK_REQUEST_UNSPECIFIED_DURATION = 4801;
     *     * BREAK_REQUEST_UNSPECIFIED_EARLIEST_START_TIME = 4802;
     *     * BREAK_REQUEST_UNSPECIFIED_LATEST_START_TIME = 4803;
     *     * BREAK_REQUEST_DURATION_NEGATIVE_OR_NAN = 4804; = 4804;
     *     * BREAK_REQUEST_LATEST_START_TIME_BEFORE_EARLIEST_START_TIME = 4805;
     *     * BREAK_REQUEST_EARLIEST_START_TIME_BEFORE_GLOBAL_START_TIME = 4806;
     *     * BREAK_REQUEST_LATEST_END_TIME_AFTER_GLOBAL_END_TIME = 4807;
     *     * BREAK_REQUEST_NON_SCHEDULABLE = 4808;
     *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_NEGATIVE_OR_NAN = 4809;
     *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_NEGATIVE_OR_NAN = 4810;
     *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION = 4811;
     *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 4812;
     *     * BREAK_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4813;
     *     * BREAK_FREQUENCY_MISSING_MAX_INTER_BREAK_DURATION = 4814;
     *     * BREAK_FREQUENCY_MISSING_MIN_BREAK_DURATION = 4815;
     * * SHIPMENT_TYPE_INCOMPATIBILITY_ERROR = 50;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_EMPTY_TYPE = 5001;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_LESS_THAN_TWO_TYPES = 5002;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_DUPLICATE_TYPE = 5003;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_INVALID_INCOMPATIBILITY_MODE = 5004;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_TOO_MANY_INCOMPATIBILITIES = 5005;
     * * SHIPMENT_TYPE_REQUIREMENT_ERROR = 52;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE = 52001;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_DEPENDENT_TYPE = 52002;
     *     * SHIPMENT_TYPE_REQUIREMENT_INVALID_REQUIREMENT_MODE = 52003;
     *     * SHIPMENT_TYPE_REQUIREMENT_TOO_MANY_REQUIREMENTS = 52004;
     *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_REQUIRED_TYPE = 52005;
     *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_REQUIRED_TYPE = 52006;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE_FOUND = 52007;
     *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_DEPENDENT_TYPE = 52008;
     *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_DEPENDENT_TYPE = 52009;
     *     * SHIPMENT_TYPE_REQUIREMENT_SELF_DEPENDENT_TYPE = 52010;
     *     * SHIPMENT_TYPE_REQUIREMENT_GRAPH_HAS_CYCLES = 52011;
     * * VEHICLE_OPERATOR_ERROR = 54;
     *     * VEHICLE_OPERATOR_EMPTY_TYPE = 5400;
     *     * VEHICLE_OPERATOR_MULTIPLE_START_TIME_WINDOWS = 5401;
     *     * VEHICLE_OPERATOR_SOFT_START_TIME_WINDOW = 5402;
     *     * VEHICLE_OPERATOR_MULTIPLE_END_TIME_WINDOWS = 5403;
     *     * VEHICLE_OPERATOR_SOFT_END_TIME_WINDOW = 5404;
     * * DURATION_SECONDS_MATRIX_ERROR = 56;
     *     * DURATION_SECONDS_MATRIX_DURATION_NEGATIVE_OR_NAN = 5600;
     *     * DURATION_SECONDS_MATRIX_DURATION_EXCEEDS_GLOBAL_DURATION = 5601;
     * </pre>
     *
     * <code>int32 code = 1;</code>
     *
     * @return The code.
     */
    @java.lang.Override
    public int getCode() {
      return code_;
    }
    /**
     *
     *
     * <pre>
     * A validation error is defined by the pair (`code`, `display_name`) which
     * are always present.
     * Other fields (below) provide more context about the error.
     * *MULTIPLE ERRORS*:
     * When there are multiple errors, the validation process tries to output
     * several of them. Much like a compiler, this is an imperfect process. Some
     * validation errors will be "fatal", meaning that they stop the entire
     * validation process. This is the case for `display_name="UNSPECIFIED"`
     * errors, among others. Some may cause the validation process to skip other
     * errors.
     * *STABILITY*:
     * `code` and `display_name` should be very stable. But new codes and
     * display names may appear over time, which may cause a given (invalid)
     * request to yield a different (`code`, `display_name`) pair because the new
     * error hid the old one (see "MULTIPLE ERRORS").
     * *REFERENCE*: A list of all (code, name) pairs:
     * * UNSPECIFIED = 0;
     * * VALIDATION_TIMEOUT_ERROR = 10; Validation couldn't be completed within
     * the deadline.
     * * REQUEST_OPTIONS_ERROR = 12;
     *     * REQUEST_OPTIONS_INVALID_SOLVING_MODE = 1201;
     *     * REQUEST_OPTIONS_INVALID_MAX_VALIDATION_ERRORS = 1203;
     *     * REQUEST_OPTIONS_INVALID_GEODESIC_METERS_PER_SECOND = 1204;
     *     * REQUEST_OPTIONS_GEODESIC_METERS_PER_SECOND_TOO_SMALL = 1205;
     *     * REQUEST_OPTIONS_MISSING_GEODESIC_METERS_PER_SECOND = 1206;
     *     * REQUEST_OPTIONS_POPULATE_PATHFINDER_TRIPS_AND_GEODESIC_DISTANCE
     *       = 1207;
     *     * REQUEST_OPTIONS_COST_MODEL_OPTIONS_AND_GEODESIC_DISTANCE = 1208;
     *     * REQUEST_OPTIONS_TRAVEL_MODE_INCOMPATIBLE_WITH_TRAFFIC = 1211;
     *     * REQUEST_OPTIONS_MULTIPLE_TRAFFIC_FLAVORS = 1212;
     *     * REQUEST_OPTIONS_INVALID_TRAFFIC_FLAVOR = 1213;
     *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITHOUT_GLOBAL_START_TIME = 1214;
     *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITH_PRECEDENCES = 1215;
     *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_MODE_INVALID = 1216;
     *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_ENABLED_WITHOUT_TRAFFIC = 1217;
     * * INJECTED_SOLUTION_ERROR = 20;
     *     * INJECTED_SOLUTION_MISSING_LABEL = 2000;
     *     * INJECTED_SOLUTION_DUPLICATE_LABEL = 2001;
     *     * INJECTED_SOLUTION_AMBIGUOUS_INDEX = 2002;
     *     * INJECTED_SOLUTION_INFEASIBLE_AFTER_GETTING_TRAVEL_TIMES = 2003;
     *     * INJECTED_SOLUTION_TRANSITION_INCONSISTENT_WITH_ACTUAL_TRAVEL = 2004;
     *     * INJECTED_SOLUTION_CONCURRENT_SOLUTION_TYPES = 2005;
     *     * INJECTED_SOLUTION_MORE_THAN_ONE_PER_TYPE = 2006;
     *     * INJECTED_SOLUTION_REFRESH_WITHOUT_POPULATE = 2008;
     * * SHIPMENT_MODEL_ERROR = 22;
     *     * SHIPMENT_MODEL_TOO_LARGE = 2200;
     *     * SHIPMENT_MODEL_TOO_MANY_CAPACITY_TYPES = 2201;
     *     * SHIPMENT_MODEL_GLOBAL_START_TIME_NEGATIVE_OR_NAN = 2202;
     *     * SHIPMENT_MODEL_GLOBAL_END_TIME_TOO_LARGE_OR_NAN = 2203;
     *     * SHIPMENT_MODEL_GLOBAL_START_TIME_AFTER_GLOBAL_END_TIME = 2204;
     *     * SHIPMENT_MODEL_GLOBAL_DURATION_TOO_LONG = 2205;
     *     * SHIPMENT_MODEL_MAX_ACTIVE_VEHICLES_NOT_POSITIVE = 2206;
     *     * SHIPMENT_MODEL_DURATION_MATRIX_TOO_LARGE = 2207;
     * * INDEX_ERROR = 24;
     * * TAG_ERROR = 26;
     * * TIME_WINDOW_ERROR = 28;
     *     * TIME_WINDOW_INVALID_START_TIME = 2800;
     *     * TIME_WINDOW_INVALID_END_TIME = 2801;
     *     * TIME_WINDOW_INVALID_SOFT_START_TIME = 2802;
     *     * TIME_WINDOW_INVALID_SOFT_END_TIME = 2803;
     *     * TIME_WINDOW_OUTSIDE_GLOBAL_TIME_WINDOW = 2804;
     *     * TIME_WINDOW_START_TIME_AFTER_END_TIME = 2805;
     *     * TIME_WINDOW_INVALID_COST_PER_HOUR_BEFORE_SOFT_START_TIME = 2806;
     *     * TIME_WINDOW_INVALID_COST_PER_HOUR_AFTER_SOFT_END_TIME = 2807;
     *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_WITHOUT_SOFT_START_TIME
     *       = 2808;
     *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_WITHOUT_SOFT_END_TIME = 2809;
     *     * TIME_WINDOW_SOFT_START_TIME_WITHOUT_COST_BEFORE_SOFT_START_TIME
     *       = 2810;
     *     * TIME_WINDOW_SOFT_END_TIME_WITHOUT_COST_AFTER_SOFT_END_TIME = 2811;
     *     * TIME_WINDOW_OVERLAPPING_ADJACENT_OR_EARLIER_THAN_PREVIOUS = 2812;
     *     * TIME_WINDOW_START_TIME_AFTER_SOFT_START_TIME = 2813;
     *     * TIME_WINDOW_SOFT_START_TIME_AFTER_END_TIME = 2814;
     *     * TIME_WINDOW_START_TIME_AFTER_SOFT_END_TIME = 2815;
     *     * TIME_WINDOW_SOFT_END_TIME_AFTER_END_TIME = 2816;
     *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_SET_AND_MULTIPLE_WINDOWS
     *       = 2817;
     *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_SET_AND_MULTIPLE_WINDOWS = 2818;
     *     * TRANSITION_ATTRIBUTES_ERROR = 30;
     *     * TRANSITION_ATTRIBUTES_INVALID_COST = 3000;
     *     * TRANSITION_ATTRIBUTES_INVALID_COST_PER_KILOMETER = 3001;
     *     * TRANSITION_ATTRIBUTES_DUPLICATE_TAG_PAIR = 3002;
     *     * TRANSITION_ATTRIBUTES_DISTANCE_LIMIT_MAX_METERS_UNSUPPORTED = 3003;
     *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_SOURCE_TAGS = 3004;
     *     * TRANSITION_ATTRIBUTES_CONFLICTING_SOURCE_TAGS_FIELDS = 3005;
     *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_DESTINATION_TAGS = 3006;
     *     * TRANSITION_ATTRIBUTES_CONFLICTING_DESTINATION_TAGS_FIELDS = 3007;
     *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_NEGATIVE_OR_NAN = 3008;
     *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_EXCEEDS_GLOBAL_DURATION = 3009;
     * * AMOUNT_ERROR = 31;
     *     * AMOUNT_NEGATIVE_VALUE = 3100;
     * * LOAD_LIMIT_ERROR = 33;
     *     * LOAD_LIMIT_INVALID_COST_ABOVE_SOFT_MAX = 3303;
     *     * LOAD_LIMIT_SOFT_MAX_WITHOUT_COST_ABOVE_SOFT_MAX = 3304;
     *     * LOAD_LIMIT_COST_ABOVE_SOFT_MAX_WITHOUT_SOFT_MAX = 3305;
     *     * LOAD_LIMIT_NEGATIVE_SOFT_MAX = 3306;
     *     * LOAD_LIMIT_MIXED_DEMAND_TYPE = 3307;
     *     * LOAD_LIMIT_MAX_LOAD_NEGATIVE_VALUE = 3308;
     *     * LOAD_LIMIT_SOFT_MAX_ABOVE_MAX = 3309;
     * * INTERVAL_ERROR = 34;
     *     * INTERVAL_MIN_EXCEEDS_MAX = 3401;
     *     * INTERVAL_NEGATIVE_MIN = 3402;
     *     * INTERVAL_NEGATIVE_MAX = 3403;
     *     * INTERVAL_MIN_EXCEEDS_CAPACITY = 3404;
     *     * INTERVAL_MAX_EXCEEDS_CAPACITY = 3405;
     * * DISTANCE_LIMIT_ERROR = 36;
     *     * DISTANCE_LIMIT_INVALID_COST_AFTER_SOFT_MAX = 3601;
     *     * DISTANCE_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3602;
     *     * DISTANCE_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3603;
     *     * DISTANCE_LIMIT_NEGATIVE_MAX = 3604;
     *     * DISTANCE_LIMIT_NEGATIVE_SOFT_MAX = 3605;
     *     * DISTANCE_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3606;
     * * DURATION_LIMIT_ERROR = 38;
     *     * DURATION_LIMIT_MAX_DURATION_NEGATIVE_OR_NAN = 3800;
     *     * DURATION_LIMIT_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3801;
     *     * DURATION_LIMIT_INVALID_COST_PER_HOUR_AFTER_SOFT_MAX = 3802;
     *     * DURATION_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3803;
     *     * DURATION_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3804;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3805;
     *     * DURATION_LIMIT_INVALID_COST_AFTER_QUADRATIC_SOFT_MAX = 3806;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_COST_PER_SQUARE_HOUR
     *       = 3807;
     *     * DURATION_LIMIT_COST_PER_SQUARE_HOUR_WITHOUT_QUADRATIC_SOFT_MAX
     *       = 3808;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_MAX = 3809;
     *     * DURATION_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3810;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_LARGER_THAN_MAX = 3811;
     *     * DURATION_LIMIT_DIFF_BETWEEN_MAX_AND_QUADRATIC_SOFT_MAX_TOO_LARGE
     *       = 3812;
     *     * DURATION_LIMIT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3813;
     *     * DURATION_LIMIT_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3814;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 3815;
     * * SHIPMENT_ERROR = 40;
     *     * SHIPMENT_PD_LIMIT_WITHOUT_PICKUP_AND_DELIVERY = 4014;
     *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_NEGATIVE_OR_NAN = 4000;
     *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 4001;
     *     * SHIPMENT_PD_RELATIVE_DETOUR_LIMIT_INVALID = 4015;
     *     * SHIPMENT_PD_DETOUR_LIMIT_AND_EXTRA_VISIT_DURATION = 4016;
     *     * SHIPMENT_PD_TIME_LIMIT_DURATION_NEGATIVE_OR_NAN = 4002;
     *     * SHIPMENT_PD_TIME_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4003;
     *     * SHIPMENT_EMPTY_SHIPMENT_TYPE = 4004;
     *     * SHIPMENT_NO_PICKUP_NO_DELIVERY = 4005;
     *     * SHIPMENT_INVALID_PENALTY_COST = 4006;
     *     * SHIPMENT_ALLOWED_VEHICLE_INDEX_OUT_OF_BOUNDS = 4007;
     *     * SHIPMENT_DUPLICATE_ALLOWED_VEHICLE_INDEX = 4008;
     *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITHOUT_INDEX = 4009;
     *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITH_INDEX = 4010;
     *     * SHIPMENT_INVALID_COST_FOR_VEHICLE = 4011;
     *     * SHIPMENT_COST_FOR_VEHICLE_INDEX_OUT_OF_BOUNDS = 4012;
     *     * SHIPMENT_DUPLICATE_COST_FOR_VEHICLE_INDEX = 4013;
     * * VEHICLE_ERROR = 42;
     *     * VEHICLE_EMPTY_REQUIRED_OPERATOR_TYPE = 4200;
     *     * VEHICLE_DUPLICATE_REQUIRED_OPERATOR_TYPE = 4201;
     *     * VEHICLE_NO_OPERATOR_WITH_REQUIRED_OPERATOR_TYPE = 4202;
     *     * VEHICLE_EMPTY_START_TAG = 4203;
     *     * VEHICLE_DUPLICATE_START_TAG = 4204;
     *     * VEHICLE_EMPTY_END_TAG = 4205;
     *     * VEHICLE_DUPLICATE_END_TAG = 4206;
     *     * VEHICLE_EXTRA_VISIT_DURATION_NEGATIVE_OR_NAN = 4207;
     *     * VEHICLE_EXTRA_VISIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4208;
     *     * VEHICLE_EXTRA_VISIT_DURATION_EMPTY_KEY = 4209;
     *     * VEHICLE_FIRST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4210;
     *     * VEHICLE_FIRST_SHIPMENT_IGNORED = 4211;
     *     * VEHICLE_FIRST_SHIPMENT_NOT_BOUND = 4212;
     *     * VEHICLE_LAST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4213;
     *     * VEHICLE_LAST_SHIPMENT_IGNORED = 4214;
     *     * VEHICLE_LAST_SHIPMENT_NOT_BOUND = 4215;
     *     * VEHICLE_IGNORED_WITH_USED_IF_ROUTE_IS_EMPTY = 4216;
     *     * VEHICLE_INVALID_COST_PER_KILOMETER = 4217;
     *     * VEHICLE_INVALID_COST_PER_HOUR = 4218;
     *     * VEHICLE_INVALID_COST_PER_TRAVELED_HOUR = 4219;
     *     * VEHICLE_INVALID_FIXED_COST = 4220;
     *     * VEHICLE_INVALID_TRAVEL_DURATION_MULTIPLE = 4221;
     *     * VEHICLE_TRAVEL_DURATION_MULTIPLE_WITH_SHIPMENT_PD_DETOUR_LIMITS
     *       = 4223;
     *     * VEHICLE_MATRIX_INDEX_WITH_SHIPMENT_PD_DETOUR_LIMITS = 4224;
     *     * VEHICLE_MINIMUM_DURATION_LONGER_THAN_DURATION_LIMIT = 4222;
     * * VISIT_REQUEST_ERROR = 44;
     *     * VISIT_REQUEST_EMPTY_TAG = 4400;
     *     * VISIT_REQUEST_DUPLICATE_TAG = 4401;
     *     * VISIT_REQUEST_DURATION_NEGATIVE_OR_NAN = 4404;
     *     * VISIT_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4405;
     * * PRECEDENCE_ERROR = 46;
     * * BREAK_ERROR = 48;
     *     * BREAK_RULE_EMPTY = 4800;
     *     * BREAK_REQUEST_UNSPECIFIED_DURATION = 4801;
     *     * BREAK_REQUEST_UNSPECIFIED_EARLIEST_START_TIME = 4802;
     *     * BREAK_REQUEST_UNSPECIFIED_LATEST_START_TIME = 4803;
     *     * BREAK_REQUEST_DURATION_NEGATIVE_OR_NAN = 4804; = 4804;
     *     * BREAK_REQUEST_LATEST_START_TIME_BEFORE_EARLIEST_START_TIME = 4805;
     *     * BREAK_REQUEST_EARLIEST_START_TIME_BEFORE_GLOBAL_START_TIME = 4806;
     *     * BREAK_REQUEST_LATEST_END_TIME_AFTER_GLOBAL_END_TIME = 4807;
     *     * BREAK_REQUEST_NON_SCHEDULABLE = 4808;
     *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_NEGATIVE_OR_NAN = 4809;
     *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_NEGATIVE_OR_NAN = 4810;
     *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION = 4811;
     *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 4812;
     *     * BREAK_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4813;
     *     * BREAK_FREQUENCY_MISSING_MAX_INTER_BREAK_DURATION = 4814;
     *     * BREAK_FREQUENCY_MISSING_MIN_BREAK_DURATION = 4815;
     * * SHIPMENT_TYPE_INCOMPATIBILITY_ERROR = 50;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_EMPTY_TYPE = 5001;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_LESS_THAN_TWO_TYPES = 5002;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_DUPLICATE_TYPE = 5003;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_INVALID_INCOMPATIBILITY_MODE = 5004;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_TOO_MANY_INCOMPATIBILITIES = 5005;
     * * SHIPMENT_TYPE_REQUIREMENT_ERROR = 52;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE = 52001;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_DEPENDENT_TYPE = 52002;
     *     * SHIPMENT_TYPE_REQUIREMENT_INVALID_REQUIREMENT_MODE = 52003;
     *     * SHIPMENT_TYPE_REQUIREMENT_TOO_MANY_REQUIREMENTS = 52004;
     *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_REQUIRED_TYPE = 52005;
     *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_REQUIRED_TYPE = 52006;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE_FOUND = 52007;
     *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_DEPENDENT_TYPE = 52008;
     *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_DEPENDENT_TYPE = 52009;
     *     * SHIPMENT_TYPE_REQUIREMENT_SELF_DEPENDENT_TYPE = 52010;
     *     * SHIPMENT_TYPE_REQUIREMENT_GRAPH_HAS_CYCLES = 52011;
     * * VEHICLE_OPERATOR_ERROR = 54;
     *     * VEHICLE_OPERATOR_EMPTY_TYPE = 5400;
     *     * VEHICLE_OPERATOR_MULTIPLE_START_TIME_WINDOWS = 5401;
     *     * VEHICLE_OPERATOR_SOFT_START_TIME_WINDOW = 5402;
     *     * VEHICLE_OPERATOR_MULTIPLE_END_TIME_WINDOWS = 5403;
     *     * VEHICLE_OPERATOR_SOFT_END_TIME_WINDOW = 5404;
     * * DURATION_SECONDS_MATRIX_ERROR = 56;
     *     * DURATION_SECONDS_MATRIX_DURATION_NEGATIVE_OR_NAN = 5600;
     *     * DURATION_SECONDS_MATRIX_DURATION_EXCEEDS_GLOBAL_DURATION = 5601;
     * </pre>
     *
     * <code>int32 code = 1;</code>
     *
     * @param value The code to set.
     * @return This builder for chaining.
     */
    public Builder setCode(int value) {

      code_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * A validation error is defined by the pair (`code`, `display_name`) which
     * are always present.
     * Other fields (below) provide more context about the error.
     * *MULTIPLE ERRORS*:
     * When there are multiple errors, the validation process tries to output
     * several of them. Much like a compiler, this is an imperfect process. Some
     * validation errors will be "fatal", meaning that they stop the entire
     * validation process. This is the case for `display_name="UNSPECIFIED"`
     * errors, among others. Some may cause the validation process to skip other
     * errors.
     * *STABILITY*:
     * `code` and `display_name` should be very stable. But new codes and
     * display names may appear over time, which may cause a given (invalid)
     * request to yield a different (`code`, `display_name`) pair because the new
     * error hid the old one (see "MULTIPLE ERRORS").
     * *REFERENCE*: A list of all (code, name) pairs:
     * * UNSPECIFIED = 0;
     * * VALIDATION_TIMEOUT_ERROR = 10; Validation couldn't be completed within
     * the deadline.
     * * REQUEST_OPTIONS_ERROR = 12;
     *     * REQUEST_OPTIONS_INVALID_SOLVING_MODE = 1201;
     *     * REQUEST_OPTIONS_INVALID_MAX_VALIDATION_ERRORS = 1203;
     *     * REQUEST_OPTIONS_INVALID_GEODESIC_METERS_PER_SECOND = 1204;
     *     * REQUEST_OPTIONS_GEODESIC_METERS_PER_SECOND_TOO_SMALL = 1205;
     *     * REQUEST_OPTIONS_MISSING_GEODESIC_METERS_PER_SECOND = 1206;
     *     * REQUEST_OPTIONS_POPULATE_PATHFINDER_TRIPS_AND_GEODESIC_DISTANCE
     *       = 1207;
     *     * REQUEST_OPTIONS_COST_MODEL_OPTIONS_AND_GEODESIC_DISTANCE = 1208;
     *     * REQUEST_OPTIONS_TRAVEL_MODE_INCOMPATIBLE_WITH_TRAFFIC = 1211;
     *     * REQUEST_OPTIONS_MULTIPLE_TRAFFIC_FLAVORS = 1212;
     *     * REQUEST_OPTIONS_INVALID_TRAFFIC_FLAVOR = 1213;
     *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITHOUT_GLOBAL_START_TIME = 1214;
     *     * REQUEST_OPTIONS_TRAFFIC_ENABLED_WITH_PRECEDENCES = 1215;
     *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_MODE_INVALID = 1216;
     *     * REQUEST_OPTIONS_TRAFFIC_PREFILL_ENABLED_WITHOUT_TRAFFIC = 1217;
     * * INJECTED_SOLUTION_ERROR = 20;
     *     * INJECTED_SOLUTION_MISSING_LABEL = 2000;
     *     * INJECTED_SOLUTION_DUPLICATE_LABEL = 2001;
     *     * INJECTED_SOLUTION_AMBIGUOUS_INDEX = 2002;
     *     * INJECTED_SOLUTION_INFEASIBLE_AFTER_GETTING_TRAVEL_TIMES = 2003;
     *     * INJECTED_SOLUTION_TRANSITION_INCONSISTENT_WITH_ACTUAL_TRAVEL = 2004;
     *     * INJECTED_SOLUTION_CONCURRENT_SOLUTION_TYPES = 2005;
     *     * INJECTED_SOLUTION_MORE_THAN_ONE_PER_TYPE = 2006;
     *     * INJECTED_SOLUTION_REFRESH_WITHOUT_POPULATE = 2008;
     * * SHIPMENT_MODEL_ERROR = 22;
     *     * SHIPMENT_MODEL_TOO_LARGE = 2200;
     *     * SHIPMENT_MODEL_TOO_MANY_CAPACITY_TYPES = 2201;
     *     * SHIPMENT_MODEL_GLOBAL_START_TIME_NEGATIVE_OR_NAN = 2202;
     *     * SHIPMENT_MODEL_GLOBAL_END_TIME_TOO_LARGE_OR_NAN = 2203;
     *     * SHIPMENT_MODEL_GLOBAL_START_TIME_AFTER_GLOBAL_END_TIME = 2204;
     *     * SHIPMENT_MODEL_GLOBAL_DURATION_TOO_LONG = 2205;
     *     * SHIPMENT_MODEL_MAX_ACTIVE_VEHICLES_NOT_POSITIVE = 2206;
     *     * SHIPMENT_MODEL_DURATION_MATRIX_TOO_LARGE = 2207;
     * * INDEX_ERROR = 24;
     * * TAG_ERROR = 26;
     * * TIME_WINDOW_ERROR = 28;
     *     * TIME_WINDOW_INVALID_START_TIME = 2800;
     *     * TIME_WINDOW_INVALID_END_TIME = 2801;
     *     * TIME_WINDOW_INVALID_SOFT_START_TIME = 2802;
     *     * TIME_WINDOW_INVALID_SOFT_END_TIME = 2803;
     *     * TIME_WINDOW_OUTSIDE_GLOBAL_TIME_WINDOW = 2804;
     *     * TIME_WINDOW_START_TIME_AFTER_END_TIME = 2805;
     *     * TIME_WINDOW_INVALID_COST_PER_HOUR_BEFORE_SOFT_START_TIME = 2806;
     *     * TIME_WINDOW_INVALID_COST_PER_HOUR_AFTER_SOFT_END_TIME = 2807;
     *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_WITHOUT_SOFT_START_TIME
     *       = 2808;
     *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_WITHOUT_SOFT_END_TIME = 2809;
     *     * TIME_WINDOW_SOFT_START_TIME_WITHOUT_COST_BEFORE_SOFT_START_TIME
     *       = 2810;
     *     * TIME_WINDOW_SOFT_END_TIME_WITHOUT_COST_AFTER_SOFT_END_TIME = 2811;
     *     * TIME_WINDOW_OVERLAPPING_ADJACENT_OR_EARLIER_THAN_PREVIOUS = 2812;
     *     * TIME_WINDOW_START_TIME_AFTER_SOFT_START_TIME = 2813;
     *     * TIME_WINDOW_SOFT_START_TIME_AFTER_END_TIME = 2814;
     *     * TIME_WINDOW_START_TIME_AFTER_SOFT_END_TIME = 2815;
     *     * TIME_WINDOW_SOFT_END_TIME_AFTER_END_TIME = 2816;
     *     * TIME_WINDOW_COST_BEFORE_SOFT_START_TIME_SET_AND_MULTIPLE_WINDOWS
     *       = 2817;
     *     * TIME_WINDOW_COST_AFTER_SOFT_END_TIME_SET_AND_MULTIPLE_WINDOWS = 2818;
     *     * TRANSITION_ATTRIBUTES_ERROR = 30;
     *     * TRANSITION_ATTRIBUTES_INVALID_COST = 3000;
     *     * TRANSITION_ATTRIBUTES_INVALID_COST_PER_KILOMETER = 3001;
     *     * TRANSITION_ATTRIBUTES_DUPLICATE_TAG_PAIR = 3002;
     *     * TRANSITION_ATTRIBUTES_DISTANCE_LIMIT_MAX_METERS_UNSUPPORTED = 3003;
     *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_SOURCE_TAGS = 3004;
     *     * TRANSITION_ATTRIBUTES_CONFLICTING_SOURCE_TAGS_FIELDS = 3005;
     *     * TRANSITION_ATTRIBUTES_UNSPECIFIED_DESTINATION_TAGS = 3006;
     *     * TRANSITION_ATTRIBUTES_CONFLICTING_DESTINATION_TAGS_FIELDS = 3007;
     *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_NEGATIVE_OR_NAN = 3008;
     *     * TRANSITION_ATTRIBUTES_DELAY_DURATION_EXCEEDS_GLOBAL_DURATION = 3009;
     * * AMOUNT_ERROR = 31;
     *     * AMOUNT_NEGATIVE_VALUE = 3100;
     * * LOAD_LIMIT_ERROR = 33;
     *     * LOAD_LIMIT_INVALID_COST_ABOVE_SOFT_MAX = 3303;
     *     * LOAD_LIMIT_SOFT_MAX_WITHOUT_COST_ABOVE_SOFT_MAX = 3304;
     *     * LOAD_LIMIT_COST_ABOVE_SOFT_MAX_WITHOUT_SOFT_MAX = 3305;
     *     * LOAD_LIMIT_NEGATIVE_SOFT_MAX = 3306;
     *     * LOAD_LIMIT_MIXED_DEMAND_TYPE = 3307;
     *     * LOAD_LIMIT_MAX_LOAD_NEGATIVE_VALUE = 3308;
     *     * LOAD_LIMIT_SOFT_MAX_ABOVE_MAX = 3309;
     * * INTERVAL_ERROR = 34;
     *     * INTERVAL_MIN_EXCEEDS_MAX = 3401;
     *     * INTERVAL_NEGATIVE_MIN = 3402;
     *     * INTERVAL_NEGATIVE_MAX = 3403;
     *     * INTERVAL_MIN_EXCEEDS_CAPACITY = 3404;
     *     * INTERVAL_MAX_EXCEEDS_CAPACITY = 3405;
     * * DISTANCE_LIMIT_ERROR = 36;
     *     * DISTANCE_LIMIT_INVALID_COST_AFTER_SOFT_MAX = 3601;
     *     * DISTANCE_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3602;
     *     * DISTANCE_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3603;
     *     * DISTANCE_LIMIT_NEGATIVE_MAX = 3604;
     *     * DISTANCE_LIMIT_NEGATIVE_SOFT_MAX = 3605;
     *     * DISTANCE_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3606;
     * * DURATION_LIMIT_ERROR = 38;
     *     * DURATION_LIMIT_MAX_DURATION_NEGATIVE_OR_NAN = 3800;
     *     * DURATION_LIMIT_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3801;
     *     * DURATION_LIMIT_INVALID_COST_PER_HOUR_AFTER_SOFT_MAX = 3802;
     *     * DURATION_LIMIT_SOFT_MAX_WITHOUT_COST_AFTER_SOFT_MAX = 3803;
     *     * DURATION_LIMIT_COST_AFTER_SOFT_MAX_WITHOUT_SOFT_MAX = 3804;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_NEGATIVE_OR_NAN = 3805;
     *     * DURATION_LIMIT_INVALID_COST_AFTER_QUADRATIC_SOFT_MAX = 3806;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_COST_PER_SQUARE_HOUR
     *       = 3807;
     *     * DURATION_LIMIT_COST_PER_SQUARE_HOUR_WITHOUT_QUADRATIC_SOFT_MAX
     *       = 3808;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_WITHOUT_MAX = 3809;
     *     * DURATION_LIMIT_SOFT_MAX_LARGER_THAN_MAX = 3810;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_LARGER_THAN_MAX = 3811;
     *     * DURATION_LIMIT_DIFF_BETWEEN_MAX_AND_QUADRATIC_SOFT_MAX_TOO_LARGE
     *       = 3812;
     *     * DURATION_LIMIT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3813;
     *     * DURATION_LIMIT_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION = 3814;
     *     * DURATION_LIMIT_QUADRATIC_SOFT_MAX_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 3815;
     * * SHIPMENT_ERROR = 40;
     *     * SHIPMENT_PD_LIMIT_WITHOUT_PICKUP_AND_DELIVERY = 4014;
     *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_NEGATIVE_OR_NAN = 4000;
     *     * SHIPMENT_PD_ABSOLUTE_DETOUR_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 4001;
     *     * SHIPMENT_PD_RELATIVE_DETOUR_LIMIT_INVALID = 4015;
     *     * SHIPMENT_PD_DETOUR_LIMIT_AND_EXTRA_VISIT_DURATION = 4016;
     *     * SHIPMENT_PD_TIME_LIMIT_DURATION_NEGATIVE_OR_NAN = 4002;
     *     * SHIPMENT_PD_TIME_LIMIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4003;
     *     * SHIPMENT_EMPTY_SHIPMENT_TYPE = 4004;
     *     * SHIPMENT_NO_PICKUP_NO_DELIVERY = 4005;
     *     * SHIPMENT_INVALID_PENALTY_COST = 4006;
     *     * SHIPMENT_ALLOWED_VEHICLE_INDEX_OUT_OF_BOUNDS = 4007;
     *     * SHIPMENT_DUPLICATE_ALLOWED_VEHICLE_INDEX = 4008;
     *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITHOUT_INDEX = 4009;
     *     * SHIPMENT_INCONSISTENT_COST_FOR_VEHICLE_SIZE_WITH_INDEX = 4010;
     *     * SHIPMENT_INVALID_COST_FOR_VEHICLE = 4011;
     *     * SHIPMENT_COST_FOR_VEHICLE_INDEX_OUT_OF_BOUNDS = 4012;
     *     * SHIPMENT_DUPLICATE_COST_FOR_VEHICLE_INDEX = 4013;
     * * VEHICLE_ERROR = 42;
     *     * VEHICLE_EMPTY_REQUIRED_OPERATOR_TYPE = 4200;
     *     * VEHICLE_DUPLICATE_REQUIRED_OPERATOR_TYPE = 4201;
     *     * VEHICLE_NO_OPERATOR_WITH_REQUIRED_OPERATOR_TYPE = 4202;
     *     * VEHICLE_EMPTY_START_TAG = 4203;
     *     * VEHICLE_DUPLICATE_START_TAG = 4204;
     *     * VEHICLE_EMPTY_END_TAG = 4205;
     *     * VEHICLE_DUPLICATE_END_TAG = 4206;
     *     * VEHICLE_EXTRA_VISIT_DURATION_NEGATIVE_OR_NAN = 4207;
     *     * VEHICLE_EXTRA_VISIT_DURATION_EXCEEDS_GLOBAL_DURATION = 4208;
     *     * VEHICLE_EXTRA_VISIT_DURATION_EMPTY_KEY = 4209;
     *     * VEHICLE_FIRST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4210;
     *     * VEHICLE_FIRST_SHIPMENT_IGNORED = 4211;
     *     * VEHICLE_FIRST_SHIPMENT_NOT_BOUND = 4212;
     *     * VEHICLE_LAST_SHIPMENT_INDEX_OUT_OF_BOUNDS = 4213;
     *     * VEHICLE_LAST_SHIPMENT_IGNORED = 4214;
     *     * VEHICLE_LAST_SHIPMENT_NOT_BOUND = 4215;
     *     * VEHICLE_IGNORED_WITH_USED_IF_ROUTE_IS_EMPTY = 4216;
     *     * VEHICLE_INVALID_COST_PER_KILOMETER = 4217;
     *     * VEHICLE_INVALID_COST_PER_HOUR = 4218;
     *     * VEHICLE_INVALID_COST_PER_TRAVELED_HOUR = 4219;
     *     * VEHICLE_INVALID_FIXED_COST = 4220;
     *     * VEHICLE_INVALID_TRAVEL_DURATION_MULTIPLE = 4221;
     *     * VEHICLE_TRAVEL_DURATION_MULTIPLE_WITH_SHIPMENT_PD_DETOUR_LIMITS
     *       = 4223;
     *     * VEHICLE_MATRIX_INDEX_WITH_SHIPMENT_PD_DETOUR_LIMITS = 4224;
     *     * VEHICLE_MINIMUM_DURATION_LONGER_THAN_DURATION_LIMIT = 4222;
     * * VISIT_REQUEST_ERROR = 44;
     *     * VISIT_REQUEST_EMPTY_TAG = 4400;
     *     * VISIT_REQUEST_DUPLICATE_TAG = 4401;
     *     * VISIT_REQUEST_DURATION_NEGATIVE_OR_NAN = 4404;
     *     * VISIT_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4405;
     * * PRECEDENCE_ERROR = 46;
     * * BREAK_ERROR = 48;
     *     * BREAK_RULE_EMPTY = 4800;
     *     * BREAK_REQUEST_UNSPECIFIED_DURATION = 4801;
     *     * BREAK_REQUEST_UNSPECIFIED_EARLIEST_START_TIME = 4802;
     *     * BREAK_REQUEST_UNSPECIFIED_LATEST_START_TIME = 4803;
     *     * BREAK_REQUEST_DURATION_NEGATIVE_OR_NAN = 4804; = 4804;
     *     * BREAK_REQUEST_LATEST_START_TIME_BEFORE_EARLIEST_START_TIME = 4805;
     *     * BREAK_REQUEST_EARLIEST_START_TIME_BEFORE_GLOBAL_START_TIME = 4806;
     *     * BREAK_REQUEST_LATEST_END_TIME_AFTER_GLOBAL_END_TIME = 4807;
     *     * BREAK_REQUEST_NON_SCHEDULABLE = 4808;
     *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_NEGATIVE_OR_NAN = 4809;
     *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_NEGATIVE_OR_NAN = 4810;
     *     * BREAK_FREQUENCY_MIN_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION = 4811;
     *     * BREAK_FREQUENCY_MAX_INTER_BREAK_DURATION_EXCEEDS_GLOBAL_DURATION
     *       = 4812;
     *     * BREAK_REQUEST_DURATION_EXCEEDS_GLOBAL_DURATION = 4813;
     *     * BREAK_FREQUENCY_MISSING_MAX_INTER_BREAK_DURATION = 4814;
     *     * BREAK_FREQUENCY_MISSING_MIN_BREAK_DURATION = 4815;
     * * SHIPMENT_TYPE_INCOMPATIBILITY_ERROR = 50;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_EMPTY_TYPE = 5001;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_LESS_THAN_TWO_TYPES = 5002;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_DUPLICATE_TYPE = 5003;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_INVALID_INCOMPATIBILITY_MODE = 5004;
     *     * SHIPMENT_TYPE_INCOMPATIBILITY_TOO_MANY_INCOMPATIBILITIES = 5005;
     * * SHIPMENT_TYPE_REQUIREMENT_ERROR = 52;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE = 52001;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_DEPENDENT_TYPE = 52002;
     *     * SHIPMENT_TYPE_REQUIREMENT_INVALID_REQUIREMENT_MODE = 52003;
     *     * SHIPMENT_TYPE_REQUIREMENT_TOO_MANY_REQUIREMENTS = 52004;
     *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_REQUIRED_TYPE = 52005;
     *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_REQUIRED_TYPE = 52006;
     *     * SHIPMENT_TYPE_REQUIREMENT_NO_REQUIRED_TYPE_FOUND = 52007;
     *     * SHIPMENT_TYPE_REQUIREMENT_EMPTY_DEPENDENT_TYPE = 52008;
     *     * SHIPMENT_TYPE_REQUIREMENT_DUPLICATE_DEPENDENT_TYPE = 52009;
     *     * SHIPMENT_TYPE_REQUIREMENT_SELF_DEPENDENT_TYPE = 52010;
     *     * SHIPMENT_TYPE_REQUIREMENT_GRAPH_HAS_CYCLES = 52011;
     * * VEHICLE_OPERATOR_ERROR = 54;
     *     * VEHICLE_OPERATOR_EMPTY_TYPE = 5400;
     *     * VEHICLE_OPERATOR_MULTIPLE_START_TIME_WINDOWS = 5401;
     *     * VEHICLE_OPERATOR_SOFT_START_TIME_WINDOW = 5402;
     *     * VEHICLE_OPERATOR_MULTIPLE_END_TIME_WINDOWS = 5403;
     *     * VEHICLE_OPERATOR_SOFT_END_TIME_WINDOW = 5404;
     * * DURATION_SECONDS_MATRIX_ERROR = 56;
     *     * DURATION_SECONDS_MATRIX_DURATION_NEGATIVE_OR_NAN = 5600;
     *     * DURATION_SECONDS_MATRIX_DURATION_EXCEEDS_GLOBAL_DURATION = 5601;
     * </pre>
     *
     * <code>int32 code = 1;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearCode() {
      bitField0_ = (bitField0_ & ~0x00000001);
      code_ = 0;
      onChanged();
      return this;
    }

    private java.lang.Object displayName_ = "";
    /**
     *
     *
     * <pre>
     * The error display name.
     * </pre>
     *
     * <code>string display_name = 2;</code>
     *
     * @return The displayName.
     */
    public java.lang.String getDisplayName() {
      java.lang.Object ref = displayName_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        displayName_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The error display name.
     * </pre>
     *
     * <code>string display_name = 2;</code>
     *
     * @return The bytes for displayName.
     */
    public com.google.protobuf.ByteString getDisplayNameBytes() {
      java.lang.Object ref = displayName_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        displayName_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The error display name.
     * </pre>
     *
     * <code>string display_name = 2;</code>
     *
     * @param value The displayName to set.
     * @return This builder for chaining.
     */
    public Builder setDisplayName(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      displayName_ = value;
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The error display name.
     * </pre>
     *
     * <code>string display_name = 2;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearDisplayName() {
      displayName_ = getDefaultInstance().getDisplayName();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The error display name.
     * </pre>
     *
     * <code>string display_name = 2;</code>
     *
     * @param value The bytes for displayName to set.
     * @return This builder for chaining.
     */
    public Builder setDisplayNameBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      displayName_ = value;
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }

    private java.util.List<
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference>
        fields_ = java.util.Collections.emptyList();

    private void ensureFieldsIsMutable() {
      if (!((bitField0_ & 0x00000004) != 0)) {
        fields_ =
            new java.util.ArrayList<
                com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference>(
                fields_);
        bitField0_ |= 0x00000004;
      }
    }

    private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference,
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder,
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder>
        fieldsBuilder_;

    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public java.util.List<
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference>
        getFieldsList() {
      if (fieldsBuilder_ == null) {
        return java.util.Collections.unmodifiableList(fields_);
      } else {
        return fieldsBuilder_.getMessageList();
      }
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public int getFieldsCount() {
      if (fieldsBuilder_ == null) {
        return fields_.size();
      } else {
        return fieldsBuilder_.getCount();
      }
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference getFields(
        int index) {
      if (fieldsBuilder_ == null) {
        return fields_.get(index);
      } else {
        return fieldsBuilder_.getMessage(index);
      }
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder setFields(
        int index,
        com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference value) {
      if (fieldsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureFieldsIsMutable();
        fields_.set(index, value);
        onChanged();
      } else {
        fieldsBuilder_.setMessage(index, value);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder setFields(
        int index,
        com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
            builderForValue) {
      if (fieldsBuilder_ == null) {
        ensureFieldsIsMutable();
        fields_.set(index, builderForValue.build());
        onChanged();
      } else {
        fieldsBuilder_.setMessage(index, builderForValue.build());
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder addFields(
        com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference value) {
      if (fieldsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureFieldsIsMutable();
        fields_.add(value);
        onChanged();
      } else {
        fieldsBuilder_.addMessage(value);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder addFields(
        int index,
        com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference value) {
      if (fieldsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureFieldsIsMutable();
        fields_.add(index, value);
        onChanged();
      } else {
        fieldsBuilder_.addMessage(index, value);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder addFields(
        com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
            builderForValue) {
      if (fieldsBuilder_ == null) {
        ensureFieldsIsMutable();
        fields_.add(builderForValue.build());
        onChanged();
      } else {
        fieldsBuilder_.addMessage(builderForValue.build());
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder addFields(
        int index,
        com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
            builderForValue) {
      if (fieldsBuilder_ == null) {
        ensureFieldsIsMutable();
        fields_.add(index, builderForValue.build());
        onChanged();
      } else {
        fieldsBuilder_.addMessage(index, builderForValue.build());
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder addAllFields(
        java.lang.Iterable<
                ? extends
                    com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference>
            values) {
      if (fieldsBuilder_ == null) {
        ensureFieldsIsMutable();
        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, fields_);
        onChanged();
      } else {
        fieldsBuilder_.addAllMessages(values);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder clearFields() {
      if (fieldsBuilder_ == null) {
        fields_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000004);
        onChanged();
      } else {
        fieldsBuilder_.clear();
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public Builder removeFields(int index) {
      if (fieldsBuilder_ == null) {
        ensureFieldsIsMutable();
        fields_.remove(index);
        onChanged();
      } else {
        fieldsBuilder_.remove(index);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
        getFieldsBuilder(int index) {
      return getFieldsFieldBuilder().getBuilder(index);
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder
        getFieldsOrBuilder(int index) {
      if (fieldsBuilder_ == null) {
        return fields_.get(index);
      } else {
        return fieldsBuilder_.getMessageOrBuilder(index);
      }
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public java.util.List<
            ? extends
                com.google.cloud.optimization.v1.OptimizeToursValidationError
                    .FieldReferenceOrBuilder>
        getFieldsOrBuilderList() {
      if (fieldsBuilder_ != null) {
        return fieldsBuilder_.getMessageOrBuilderList();
      } else {
        return java.util.Collections.unmodifiableList(fields_);
      }
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
        addFieldsBuilder() {
      return getFieldsFieldBuilder()
          .addBuilder(
              com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
                  .getDefaultInstance());
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder
        addFieldsBuilder(int index) {
      return getFieldsFieldBuilder()
          .addBuilder(
              index,
              com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
                  .getDefaultInstance());
    }
    /**
     *
     *
     * <pre>
     * An error context may involve 0, 1 (most of the time) or more fields. For
     * example, referring to vehicle #4 and shipment #2's first pickup can be
     * done as follows:
     * ```
     * fields { name: "vehicles" index: 4}
     * fields { name: "shipments" index: 2 sub_field {name: "pickups" index: 0} }
     * ```
     * Note, however, that the cardinality of `fields` should not change for a
     * given error code.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference fields = 3;
     * </code>
     */
    public java.util.List<
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder>
        getFieldsBuilderList() {
      return getFieldsFieldBuilder().getBuilderList();
    }

    private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference,
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference.Builder,
            com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReferenceOrBuilder>
        getFieldsFieldBuilder() {
      if (fieldsBuilder_ == null) {
        fieldsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference,
                com.google.cloud.optimization.v1.OptimizeToursValidationError.FieldReference
                    .Builder,
                com.google.cloud.optimization.v1.OptimizeToursValidationError
                    .FieldReferenceOrBuilder>(
                fields_, ((bitField0_ & 0x00000004) != 0), getParentForChildren(), isClean());
        fields_ = null;
      }
      return fieldsBuilder_;
    }

    private java.lang.Object errorMessage_ = "";
    /**
     *
     *
     * <pre>
     * Human-readable string describing the error. There is a 1:1 mapping
     * between `code` and `error_message` (when code != "UNSPECIFIED").
     * *STABILITY*: Not stable: the error message associated to a given `code` may
     * change (hopefully to clarify it) over time. Please rely on the
     * `display_name` and `code` instead.
     * </pre>
     *
     * <code>string error_message = 4;</code>
     *
     * @return The errorMessage.
     */
    public java.lang.String getErrorMessage() {
      java.lang.Object ref = errorMessage_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        errorMessage_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Human-readable string describing the error. There is a 1:1 mapping
     * between `code` and `error_message` (when code != "UNSPECIFIED").
     * *STABILITY*: Not stable: the error message associated to a given `code` may
     * change (hopefully to clarify it) over time. Please rely on the
     * `display_name` and `code` instead.
     * </pre>
     *
     * <code>string error_message = 4;</code>
     *
     * @return The bytes for errorMessage.
     */
    public com.google.protobuf.ByteString getErrorMessageBytes() {
      java.lang.Object ref = errorMessage_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        errorMessage_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Human-readable string describing the error. There is a 1:1 mapping
     * between `code` and `error_message` (when code != "UNSPECIFIED").
     * *STABILITY*: Not stable: the error message associated to a given `code` may
     * change (hopefully to clarify it) over time. Please rely on the
     * `display_name` and `code` instead.
     * </pre>
     *
     * <code>string error_message = 4;</code>
     *
     * @param value The errorMessage to set.
     * @return This builder for chaining.
     */
    public Builder setErrorMessage(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      errorMessage_ = value;
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Human-readable string describing the error. There is a 1:1 mapping
     * between `code` and `error_message` (when code != "UNSPECIFIED").
     * *STABILITY*: Not stable: the error message associated to a given `code` may
     * change (hopefully to clarify it) over time. Please rely on the
     * `display_name` and `code` instead.
     * </pre>
     *
     * <code>string error_message = 4;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearErrorMessage() {
      errorMessage_ = getDefaultInstance().getErrorMessage();
      bitField0_ = (bitField0_ & ~0x00000008);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Human-readable string describing the error. There is a 1:1 mapping
     * between `code` and `error_message` (when code != "UNSPECIFIED").
     * *STABILITY*: Not stable: the error message associated to a given `code` may
     * change (hopefully to clarify it) over time. Please rely on the
     * `display_name` and `code` instead.
     * </pre>
     *
     * <code>string error_message = 4;</code>
     *
     * @param value The bytes for errorMessage to set.
     * @return This builder for chaining.
     */
    public Builder setErrorMessageBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      errorMessage_ = value;
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }

    private java.lang.Object offendingValues_ = "";
    /**
     *
     *
     * <pre>
     * May contain the value(s) of the field(s). This is not always available. You
     * should absolutely not rely on it and use it only for manual model
     * debugging.
     * </pre>
     *
     * <code>string offending_values = 5;</code>
     *
     * @return The offendingValues.
     */
    public java.lang.String getOffendingValues() {
      java.lang.Object ref = offendingValues_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        offendingValues_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * May contain the value(s) of the field(s). This is not always available. You
     * should absolutely not rely on it and use it only for manual model
     * debugging.
     * </pre>
     *
     * <code>string offending_values = 5;</code>
     *
     * @return The bytes for offendingValues.
     */
    public com.google.protobuf.ByteString getOffendingValuesBytes() {
      java.lang.Object ref = offendingValues_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        offendingValues_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * May contain the value(s) of the field(s). This is not always available. You
     * should absolutely not rely on it and use it only for manual model
     * debugging.
     * </pre>
     *
     * <code>string offending_values = 5;</code>
     *
     * @param value The offendingValues to set.
     * @return This builder for chaining.
     */
    public Builder setOffendingValues(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      offendingValues_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * May contain the value(s) of the field(s). This is not always available. You
     * should absolutely not rely on it and use it only for manual model
     * debugging.
     * </pre>
     *
     * <code>string offending_values = 5;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearOffendingValues() {
      offendingValues_ = getDefaultInstance().getOffendingValues();
      bitField0_ = (bitField0_ & ~0x00000010);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * May contain the value(s) of the field(s). This is not always available. You
     * should absolutely not rely on it and use it only for manual model
     * debugging.
     * </pre>
     *
     * <code>string offending_values = 5;</code>
     *
     * @param value The bytes for offendingValues to set.
     * @return This builder for chaining.
     */
    public Builder setOffendingValuesBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      offendingValues_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }

    @java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }

    @java.lang.Override
    public final Builder mergeUnknownFields(
        final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.mergeUnknownFields(unknownFields);
    }

    // @@protoc_insertion_point(builder_scope:google.cloud.optimization.v1.OptimizeToursValidationError)
  }

  // @@protoc_insertion_point(class_scope:google.cloud.optimization.v1.OptimizeToursValidationError)
  private static final com.google.cloud.optimization.v1.OptimizeToursValidationError
      DEFAULT_INSTANCE;

  static {
    DEFAULT_INSTANCE = new com.google.cloud.optimization.v1.OptimizeToursValidationError();
  }

  public static com.google.cloud.optimization.v1.OptimizeToursValidationError getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }

  private static final com.google.protobuf.Parser<OptimizeToursValidationError> PARSER =
      new com.google.protobuf.AbstractParser<OptimizeToursValidationError>() {
        @java.lang.Override
        public OptimizeToursValidationError parsePartialFrom(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
          Builder builder = newBuilder();
          try {
            builder.mergeFrom(input, extensionRegistry);
          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
            throw e.setUnfinishedMessage(builder.buildPartial());
          } catch (com.google.protobuf.UninitializedMessageException e) {
            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
          } catch (java.io.IOException e) {
            throw new com.google.protobuf.InvalidProtocolBufferException(e)
                .setUnfinishedMessage(builder.buildPartial());
          }
          return builder.buildPartial();
        }
      };

  public static com.google.protobuf.Parser<OptimizeToursValidationError> parser() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.protobuf.Parser<OptimizeToursValidationError> getParserForType() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.cloud.optimization.v1.OptimizeToursValidationError getDefaultInstanceForType() {
    return DEFAULT_INSTANCE;
  }
}