@abc.abstractmethod<EOL><INDENT>def get_undaseconds(self):<DEDENT>
return<EOL>
Gets the number of undaseconds of the vatosecond 0-999.

        An undasecond is one unadecillionth of a second.

        :return: the undaseconds of the vatosecond
        :rtype: ``cardinal``


        *compliance: mandatory -- This method must be implemented.*