class_docstr: Base class for adapting messages
  
  Override message_type(msg) methods to create adapters.
class_docstr_tok: ["Base","class","for","adapting","messages","Override","message_type","(","msg",")","methods","to","create","adapters","."]
code: def update_metadata(self, msg):
      return msg
  
imports: import re
  import json
  from jupyter_client import protocol_version_info
label_desc: Use image node_id 2 for calling the Adapter obj's underlying member method code with example usage: obj.update_metadata(msg) and returns: msg