code: @Override
  	public WildcardTypeReference newWildcardExtendsObject() {
  		WildcardTypeReference result = newWildcardTypeReference();
  		result.addUpperBound(newReferenceToObject());
  		return result;
  	}
docs: Creates a wildcard reference to {@link Object} or returns a wildcard to an {@link UnknownTypeReference} if no
  JRE is available.