def get_asset_temporal_assignment_session_for_repository(self,<EOL>repository_id=None,<EOL>proxy=None):
<EOL>return self._provider_manager.get_asset_temporal_assignment_session_for_repository(<EOL>repository_id,<EOL>proxy)<EOL>
Gets the session for assigning temporal coverage of an asset for the
        given repository.

        arg:    repository_id (osid.id.Id): the ``Id`` of the repository
        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.repository.AssetTemporalAssignmentSession) - an
                ``AssetTemporalAssignmentSession``
        raise:  NotFound - ``repository_id`` not found
        raise:  NullArgument - ``repository_id`` or ``proxy`` is
                ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_asset_temporal_assignment()``
                or ``supports_visible_federation()`` is ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_asset_temporal_assignment()`` and
        ``supports_visible_federation()`` are ``true``.*