code: @Nonnull
    public static <T> T ensureNonNull(@Nonnull final T value) {
      return Assertions.assertNotNull(value);
    }
docs: Get value if it is not null.
  
  @param <T>   type of value
  @param value the value
  @return the value if it is not null
  @throws AssertionError if the value is null
  @since 1.0