@classmethod
def get_namespace(cls, shorthand: str) ->str:
    """
        Get the namespace for the given shorthand.

        :param shorthand: The shorthand, e.g. 'xsd'
        :return: The namespace, e.g. 'http://www.w3.org/2001/XMLSchema#'
        """
    return cls._namespaces[shorthand]
