code: public static ErrorMessageFactory shouldNotContain(Object actual, Object expected, Object found) {
      return new ShouldNotContain(actual, expected, found);
    }
docs: Creates a new </code>{@link ShouldNotContain}</code>.
  
  @param actual the actual value in the failed assertion.
  @param expected values expected not to be contained in {@code actual}.
  @param found the values in {@code expected} found in {@code actual}.
  @return the created {@code ErrorMessageFactory}.