code: def dumps(self, obj):
      return self._dumps(obj, **self.dumps_kwargs)
  
file_path: DALI/dali/python/nvidia/dali/pickling.py
imports: import inspect
  import pickle
  import io
  from nvidia.dali import reducers
label_desc: Use image node_id 4 for calling the _CustomPickler obj's underlying member method code with example usage: obj.dumps(obj) and returns: self