* encoding and decoding behavior, use configuration methods to obtain a new encoding with modified
 * behavior:
 *
 * <pre>{@code
 * BaseEncoding.base16().lowerCase().decode("deadbeef");
 * }</pre>
 *
 * <p>Warning: BaseEncoding instances are immutable. Invoking a configuration method has no effect
 * on the receiving instance; you must store and use the new encoding instance it returns, instead.
 *

    List<Integer> one = Arrays.asList((int) 1);
    assertThat(Ints.toArray(one)).isEqualTo(ARRAY1);

    int[] array = {(int) 0, (int) 1, (int) 0xdeadbeef};

    List<Integer> three = Arrays.asList((int) 0, (int) 1, (int) 0xdeadbeef);
    assertThat(Ints.toArray(three)).isEqualTo(array);

    assertThat(Ints.toArray(Ints.asList(array))).isEqualTo(array);
  }

  public void testToArray_threadSafe() {