/guava/android/guava/src/com/google/common/collect/ImmutableMultimap.java
Map<K, Collection<V>> builderMap;
final Map<K, Collection<V>> builderMap;
} public static <K, V> Builder<K, V> builder() { return new Builder<>(); } @DoNotMock public static class Builder<K, V> { <extra_id_0> @CheckForNull Comparator<? super K> keyComparator; @CheckForNull Comparator<? super V> valueComparator; public Builder() { this.builderMap = Platform.preservesInsertionOrderOnPutsMap(); } Collection<V> newMutableValueCollection() {