code: public static void assertNotEquals(String message, Object expected, Object actual) {
          if (areBothNull(expected, actual)) {
              fail(message);
          } else if (isObjectEquals(expected, actual)) {
              fail(message);
          } else {
              pass(message);
          }
      }
docs: Assert that an actual value is not equal to an expected value.
  <p>
  Equality is tested with the standard Object equals() method, unless both values are null.
  <p>
  If the assertion passes, a green tick will be shown. If the assertion fails, a red cross will be shown.
  
  @param message  message to display alongside the assertion outcome
  @param expected the expected value
  @param actual   the actual value