code: def print_sequence(self):
      print(f"Sequence = {self.sequence}")
  
imports: from copy import deepcopy
  from typing import Any, List, Tuple
  from torch import Tensor
  from torch.fx import Graph, Node
  from colossalai.auto_parallel.passes.runtime_apply_pass import runtime_apply, runtime_comm_spec_apply
  from colossalai.fx.codegen.activation_checkpoint_codegen import _find_nested_ckpt_regions
  from colossalai.fx.profiler import activation_size, calculate_bwd_time, calculate_fwd_out, calculate_fwd_time, calculate_fwd_tmp
  from colossalai.logging import get_dist_logger
  from .ckpt_solver_base import CheckpointSolverBase
  from .operation import Backward, Chain, ForwardCheck, ForwardEnable, ForwardNograd, Loss, Sequence
label_desc: Use image node_id 4 for calling the CheckpointSolverRotor obj's underlying member method code with example usage: obj.print_sequence() without return types