1 /* 2 * Copyright (C) 2016 The Guava Authors 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 com.google.common.collect; 18 19 import com.google.common.annotations.GwtCompatible; 20 import java.util.Collection; 21 import java.util.Map; 22 23 /** 24 * A dummy superclass to support GWT serialization of the element types of a {@link 25 * LinkedHashMultimap}. The GWT supersource for this class contains a field for each type. 26 * 27 * <p>For details about this hack, see {@code GwtSerializationDependencies}, which takes the same 28 * approach but with a subclass rather than a superclass. 29 * 30 * <p>TODO(cpovirk): Consider applying this subclass approach to our other types. 31 */ 32 @GwtCompatible(emulated = true) 33 abstract class LinkedHashMultimapGwtSerializationDependencies<K, V> 34 extends AbstractSetMultimap<K, V> { LinkedHashMultimapGwtSerializationDependencies(Map<K, Collection<V>> map)35 LinkedHashMultimapGwtSerializationDependencies(Map<K, Collection<V>> map) { 36 super(map); 37 } 38 } 39