text: from ..base import DummyAction
  from ..register import register_action
  from . import create_update_delete  # noqa
  
  
  @register_action("assignment.sort")
  class AssignmentSort(DummyAction):
      pass
  
  
  @register_action("assignment.change_candidate")
  class AssignmentChangeCandidate(DummyAction):
      pass
  
  
  @register_action("assignment.add_self")
  class AssignmentAddSelf(DummyAction):
      pass
  
  
  @register_action("assignment.delete_self")
  class AssignmentDeleteSelf(DummyAction):
      pass
  