@abc.abstractmethod<EOL><INDENT>def get_yoctoseconds(self):<DEDENT>
return<EOL>
Gets the number of yoctoseconds of the picosecond 0-999.

        A yoctosecond is one septillionth of a second. This is getting
        quite small.

        :return: the yoctoseconds of the picosecond
        :rtype: ``cardinal``


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