@classmethod
def is_bool(cls, my_bool):
    """
        Return true if the provided my_bool is a boolean.
        :param cls: Our class.
        :param my_bool: A boolean..
        :return: Return true if the provided my_bool is a boolean. False otherwise.
        """
    if my_bool is None:
        return False
    else:
        return isinstance(my_bool, bool)
