android/guava/src/com/google/common/collect/LinkedListMultimap.java
@CanIgnoreReturnValue
  @Override
  public List<V> removeAll(@NullableDecl Object key) {
    List<V> oldValues = getCopy(key);
    removeAllNodes(key);
    return oldValues;
  }
@CanIgnoreReturnValue
  @Override
  public List<V> removeAll(@NullableDecl Object key) {
    List<V> oldValues = getCopy(key);
    removeAllNodes(key);
    return oldValues;
  }
{@inheritDoc}

<p>The returned list is immutable and implements {@link java.util.RandomAccess}.