code: def session(self, value):
          
  
          # unset session token
          if value is None:
              self._session = None
              return
  
          if not isinstance(value, dict):
              raise ValueError("session info is required")
  
          session_parsed = {}
  
          for key in ["session_token", "time", "secret_key"]:
              if key not in value:
                  raise ValueError("Missing parameter: {}".format(key))
              session_parsed[key] = value[key]
  
          for key in ["ekey", "pkey"]:
              # nice to have, but not mandatory
              if key in value:
                  session_parsed[key] = value[key]
  
          self._session = session_parsed
docs: Set session token
  
          value -- dict returned by user/get_session_token