@abc.abstractmethod<EOL><INDENT>def get_resource_form_for_update(self, resource_id):<DEDENT>
return<EOL>
Gets the resource form for updating an existing resource.

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

        :param resource_id: the ``Id`` of the ``Resource``
        :type resource_id: ``osid.id.Id``
        :return: the resource form
        :rtype: ``osid.resource.ResourceForm``
        :raise: ``NotFound`` -- ``resource_id`` is not found
        :raise: ``NullArgument`` -- ``resource_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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