code: def send(self, *args, **kwargs):
      self.messages.append((args, kwargs))
  
file_path: catboost/contrib/python/ipywidgets/py2/ipywidgets/widgets/tests/utils.py
imports: from ipykernel.comm import Comm
  from ipywidgets import Widget
label_desc: Use image node_id 3 for calling the DummyComm obj's underlying member method code with example usage: obj.send() without return types