code: public static <K, V> RemovalNotification<K, V> create(
        @Nullable K key, @Nullable V value, RemovalCause cause) {
      return new RemovalNotification(key, value, cause);
    }
docs: Creates a new {@code RemovalNotification} for the given {@code key}/{@code value} pair, with
  the given {@code cause} for the removal. The {@code key} and/or {@code value} may be {@code
  null} if they were already garbage collected.
  
  @since 19.0