@utilities.arguments_not_none<EOL><INDENT>def get_composition_form_for_update(self, composition_id):<DEDENT>
<EOL>return self._provider_session.get_composition_form_for_update(composition_id)<EOL>
Gets the composition form for updating an existing composition.

        A new composition form should be requested for each update
        transaction.

        arg:    composition_id (osid.id.Id): the ``Id`` of the
                ``Composition``
        return: (osid.repository.CompositionForm) - the composition form
        raise:  NotFound - ``composition_id`` is not found
        raise:  NullArgument - ``composition_id`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*