code: def mark_failed(self, experiment, traceback):
      pass
  
imports: import logging
  from io import StringIO
  from neptune.common.utils import NoopObject
  from neptune.legacy.backend import BackendApiClient, LeaderboardApiClient
label_desc: Use image node_id 24 for calling the OfflineLeaderboardApiClient obj's underlying member method code with example usage: obj.mark_failed(experiment, traceback) without return types