code: def __subclasshook__(cls, subclass):
      if cls is _Launcher:
          return (
              hasattr(subclass, "train_step")
              and callable(subclass.train_step)
              and hasattr(subclass, "infer_step")
              and callable(subclass.infer_step)
          )
      return NotImplemented
  
file_path: PaddleSeg/contrib/PanopticSeg/paddlepanseg/core/launcher.py
imports: import abc
  import paddle
label_desc: Use image node_id 3 for calling the _Launcher obj's underlying member method code with example usage: obj.__subclasshook__(cls, subclass) and returns: NotImplemented, unknown