docs: def schedule_at(self, task: Schedulable, at: datetime, *args, **kwargs):
          """Add a job to be executed in the future to the batch.
  
          :arg task: the task or its name to execute in the background
          :arg at: Date at which the job should start. It is advised to pass a
                   timezone aware datetime to lift any ambiguity. However if a
                   timezone naive datetime if given, it will be assumed to
                   contain UTC time.
          :arg args: args to be passed to the task function
          :arg kwargs: kwargs to be passed to the task function
          """
          self.jobs_to_create.append((task, at, args, kwargs))