code: def __init__(self, typename, *module_args, **module_kwargs):
      self.typename = typename
      self.module_args = module_args
      self.module_kwargs = module_kwargs
      self.children = None
      self._param_count = 0
  
      if not issubclass(typename, torch.nn.Module):
          raise RuntimeError(
              "LayerSpec only supports torch.nn.Module types."
          )
  
file_path: ColossalAI/colossalai/legacy/pipeline/layer_spec.py
imports: import torch
  from colossalai.utils.model.utils import call_to_str
label_desc: Use image node_id 1 to create a new LayerSpec object  with example: obj = LayerSpec(typename)