}
      return false;
    }

    @Override
    public boolean remove(@CheckForNull Object o) {
      if (o instanceof Map.Entry) {
        Map.Entry<?, ?> entry = (Map.Entry<?, ?>) o;
        return multimap().remove(entry.getKey(), entry.getValue());
      }
      return false;
    }

    @Override
    public void clear() {
      multimap().clear();
    }
  }