code: def get_repository_form_for_update(self, repository_id=None):
          
          # Implemented from awsosid template for -
          # osid.resource.BinAdminSession.get_bin_form_for_update_template
          if not self._can('update'):
              raise PermissionDenied()
          else:
              return self._provider_session.get_repository_form_for_update(repository_id)
docs: Gets the repository form for updating an existing repository.
  
          A new repository form should be requested for each update
          transaction.
  
          arg:    repository_id (osid.id.Id): the ``Id`` of the
                  ``Repository``
          return: (osid.repository.RepositoryForm) - the repository form
          raise:  NotFound - ``repository_id`` is not found
          raise:  NullArgument - ``repository_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method must be implemented.*