@abc.abstractmethod<EOL><INDENT>def set_release_date(self, release_date):<DEDENT>
pass<EOL>
Sets the publisher release date.

        :param release_date: the new release date
        :type release_date: ``osid.calendaring.DateTime``
        :raise: ``InvalidArgument`` -- ``release_date`` is invalid
        :raise: ``NoAccess`` -- ``Metadata.isReadOnly()`` is ``true``
        :raise: ``NullArgument`` -- ``release_date`` is ``null``

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