code: def create(solver_name: str) -> Type[Solver]:
      if solver_name not in SolverFactory.solvers:
          raise TypeError(
              f"Unknown parameter offload policy {solver_name}"
          )
      return SolverFactory.solvers[solver_name]
  
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 1 for calling the SolverFactory obj's underlying member method code with example usage: obj.create(solver_name) and returns: SolverFactory