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+/*
+ * Copyright (C) 2007 The Guava Authors
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+package com.google.common.collect;
+
+import com.google.common.annotations.GwtCompatible;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+
+import javax.annotation.Nullable;
+
+/**
+ * A {@code Multimap} that can hold duplicate key-value pairs and that maintains
+ * the insertion ordering of values for a given key. See the {@link Multimap}
+ * documentation for information common to all multimaps.
+ *
+ * <p>The {@link #get}, {@link #removeAll}, and {@link #replaceValues} methods
+ * each return a {@link List} of values. Though the method signature doesn't say
+ * so explicitly, the map returned by {@link #asMap} has {@code List} values.
+ *
+ * <p>See the Guava User Guide article on <a href=
+ * "http://code.google.com/p/guava-libraries/wiki/NewCollectionTypesExplained#Multimap">
+ * {@code Multimap}</a>.
+ *
+ * @author Jared Levy
+ * @since 2.0 (imported from Google Collections Library)
+ */
+@GwtCompatible
+public interface ListMultimap<K, V> extends Multimap<K, V> {
+ /**
+ * {@inheritDoc}
+ *
+ * <p>Because the values for a given key may have duplicates and follow the
+ * insertion ordering, this method returns a {@link List}, instead of the
+ * {@link java.util.Collection} specified in the {@link Multimap} interface.
+ */
+ @Override
+ List<V> get(@Nullable K key);
+
+ /**
+ * {@inheritDoc}
+ *
+ * <p>Because the values for a given key may have duplicates and follow the
+ * insertion ordering, this method returns a {@link List}, instead of the
+ * {@link java.util.Collection} specified in the {@link Multimap} interface.
+ */
+ @Override
+ List<V> removeAll(@Nullable Object key);
+
+ /**
+ * {@inheritDoc}
+ *
+ * <p>Because the values for a given key may have duplicates and follow the
+ * insertion ordering, this method returns a {@link List}, instead of the
+ * {@link java.util.Collection} specified in the {@link Multimap} interface.
+ */
+ @Override
+ List<V> replaceValues(K key, Iterable<? extends V> values);
+
+ /**
+ * {@inheritDoc}
+ *
+ * <p>Though the method signature doesn't say so explicitly, the returned map
+ * has {@link List} values.
+ */
+ @Override
+ Map<K, Collection<V>> asMap();
+
+ /**
+ * Compares the specified object to this multimap for equality.
+ *
+ * <p>Two {@code ListMultimap} instances are equal if, for each key, they
+ * contain the same values in the same order. If the value orderings disagree,
+ * the multimaps will not be considered equal.
+ *
+ * <p>An empty {@code ListMultimap} is equal to any other empty {@code
+ * Multimap}, including an empty {@code SetMultimap}.
+ */
+ @Override
+ boolean equals(@Nullable Object obj);
+}