* Delegates to {@link Map#get}. Returns {@code null} on {@code ClassCastException} and {@code
   * NullPointerException}.
   */
  static <V extends @Nullable Object> @Nullable V safeGet(Map<?, V> map, @Nullable Object key) {
    checkNotNull(map);
    try {
      return map.get(key);
    } catch (ClassCastException | NullPointerException e) {
      return null;
    }
  }

  /**

        catchingAsync(inputFuture, Throwable.class, x -> null, directExecutor());
    ExecutionException expected =
        assertThrows(ExecutionException.class, () -> getDone(chainedFuture));
    NullPointerException cause = (NullPointerException) expected.getCause();
    assertThat(cause)
        .hasMessageThat()
        .contains(
            "AsyncFunction.apply returned null instead of a Future. "

        catchingAsync(inputFuture, Throwable.class, x -> null, directExecutor());
    ExecutionException expected =
        assertThrows(ExecutionException.class, () -> getDone(chainedFuture));
    NullPointerException cause = (NullPointerException) expected.getCause();
    assertThat(cause)
        .hasMessageThat()
        .contains(
            "AsyncFunction.apply returned null instead of a Future. "

   * Delegates to {@link Map#get}. Returns {@code null} on {@code ClassCastException} and {@code
   * NullPointerException}.
   */
  static <V extends @Nullable Object> @Nullable V safeGet(Map<?, V> map, @Nullable Object key) {
    checkNotNull(map);
    try {
      return map.get(key);
    } catch (ClassCastException | NullPointerException e) {
      return null;
    }
  }

  /**

     * change). To access the renamed file it is necessary to construct a
     * new {@code SmbFile}</i>.
     *
     * @param  dest  An <code>SmbFile</code> that represents the new pathname
     * @throws NullPointerException
     *         If the <code>dest</code> argument is <code>null</code>
     * @throws SmbException if an error occurs during the rename operation
     */