@abc.abstractmethod<EOL><INDENT>def supports_priority_type(self, priority_type):<DEDENT>
return<EOL>
Tests if the priority type is supported.

        :param priority_type: a ``Type`` indicating a priority type
        :type priority_type: ``osid.type.Type``
        :return: ``true`` if the given ``Type`` is supported, ``false`` otherwise
        :rtype: ``boolean``
        :raise: ``NullArgument`` -- ``priority_type`` is ``null``

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