code: def create(cls_name, model_cfg, env_cfg=None):
      """
      Create an instance of given module class.
  
      Args:
          cls_name(str): Class of which to create instnce.
  
      Return: instance of type `cls_or_name`
      """
      assert type(cls_name) == str, "should be a name of class"
      if cls_name not in global_config:
          raise ValueError(
              "The module {} is not registered".format(cls_name)
          )
      cls = global_config[cls_name]
      return cls(model_cfg, env_cfg)
  
label_desc: Use image node_id 2 for calling a global function with example usage: create(cls_name, model_cfg, env_cfg) and returns: cls