code: def _run_soft_delete(self):
          
          query = self.new_query().where(self.get_key_name(), self.get_key())
  
          time = self.fresh_timestamp()
          setattr(self, self.get_deleted_at_column(), time)
  
          query.update({self.get_deleted_at_column(): self.from_datetime(time)})
docs: Perform the actual delete query on this model instance.