@abc.abstractmethod<EOL><INDENT>def set_priority(self, priority):<DEDENT>
pass<EOL>
Sets the priority.

        :param priority: the new priority
        :type priority: ``osid.type.Type``
        :raise: ``InvalidArgument`` -- ``priority`` is invalid
        :raise: ``NoAccess`` -- ``Metadata.isReadOnly()`` is ``true``
        :raise: ``NullArgument`` -- ``priority`` is ``null``

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