code: def get_solver_names():
      return tuple(SolverFactory.solvers.keys())
  
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 2 for calling the SolverFactory obj's underlying member method code with example usage: obj.get_solver_names() and returns: tuple