code: def __init__(
      self, memstats: MemStats, gradstats: GradMemStats
  ) -> None:
      super().__init__()
      self._training_phase = TrainingPhase.FORWARD
      self._memstats = memstats
      self._grad_stats = gradstats
      self.mem_monitor = SyncCudaMemoryMonitor()
  
imports: from contextlib import contextmanager
  from enum import Enum
  from functools import partial
  from typing import List
  import torch
  from colossalai.legacy.zero.gemini.tensor_utils import alloc_storage, free_storage
  from colossalai.tensor.param_op_hook import ColoParamOpHook
  from colossalai.zero.gemini.memory_tracer import MemStats, SyncCudaMemoryMonitor
label_desc: Use image node_id 1 to create a new ParamMemTracerHook object from inherited base classes: ColoParamOpHook with example: obj = ParamMemTracerHook(memstats, gradstats)