code: def _try_to_offload(self, offload_region: Region):
      # record previous information
      orig_need_offload = offload_region.need_offload
      assert not orig_need_offload
      offload_region.need_offload = True
  
      ts, profit = self._eval_one_choice(offload_region)
  
      # restore previous information
      offload_region.need_offload = orig_need_offload
      return ts, profit
  
imports: import time
  from abc import ABC, abstractmethod
  from typing import Dict, List, Type
  import torch
  from torch.fx.node import Node
  from colossalai.utils.device import get_current_device
  from .region import Region
  from .training_simulator import AsynTrainingSimulator, SynTrainingSimulator, TrainingSimulator
  from .util import NodeInfo, NvDevicePower
label_desc: Use image node_id 5 for calling the SynGreedySolver obj's underlying member method code with example usage: obj._try_to_offload(offload_region) and returns: ts,  profit