1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.car.annotation; 18 19 import static java.lang.annotation.ElementType.ANNOTATION_TYPE; 20 import static java.lang.annotation.ElementType.FIELD; 21 import static java.lang.annotation.RetentionPolicy.SOURCE; 22 23 import java.lang.annotation.Retention; 24 import java.lang.annotation.Target; 25 26 /** 27 * This is for optional features. Features marked with this should be first checked if it is 28 * supported using {@link android.car.Car#isFeatureSupported(featureName)}. 29 * 30 * @hide 31 */ 32 @Retention(SOURCE) 33 @Target({ANNOTATION_TYPE, FIELD}) 34 public @interface OptionalFeature { 35 } 36