code: def __init__(
      self,
      solver=None,
      loss=None,
      data_feeder=lambda: True,
      forward_callback_on_start=lambda i: True,
      forward_callback_on_finish=lambda i: True,
      backward_callback_on_start=lambda i: True,
      backward_callback_on_finish=lambda i: True,
      comm_callback_on_start=lambda i: True,
      comm_callback_on_finish=lambda i: True,
      update_callback_on_start=lambda i: True,
      update_callback_on_finish=lambda i: True,
      clear_buffer=True,
      accum_grad=1,
      comm=None,
      grads=[],
  ):
      self.solver = solver
      self.loss = loss
      self.data_feeder = data_feeder
      self.forward_callback_on_start = self._force_to_list(
          forward_callback_on_start
      )
      self.forward_callback_on_finish = self._force_to_list(
          forward_callback_on_finish
      )
      self.backward_callback_on_start = self._force_to_list(
          backward_callback_on_start
      )
      self.backward_callback_on_finish = self._force_to_list(
          backward_callback_on_finish
      )
      self.comm_callback_on_start = self._force_to_list(
          comm_callback_on_start
      )
      self.comm_callback_on_finish = self._force_to_list(
          comm_callback_on_finish
      )
      self.update_callback_on_start = self._force_to_list(
          update_callback_on_start
      )
      self.update_callback_on_finish = self._force_to_list(
          update_callback_on_finish
      )
      self.clear_buffer = clear_buffer
      self.accum_grad = accum_grad
      self.comm = comm
      self.grads = grads
  
label_desc: Use image node_id 2 to create a new Updater object from inherited base classes: object with example: obj = Updater(solver, loss, data_feeder, forward_callback_on_start, forward_callback_on_finish, backward_callback_on_start, backward_callback_on_finish, comm_callback_on_start, comm_callback_on_finish, update_callback_on_start, update_callback_on_finish, clear_buffer, accum_grad, comm, grads)