code: def get_system_channels(self, experiment) -> Dict[str, object]:
      pass
  
imports: from abc import ABC, abstractmethod
  from typing import Dict
  from neptune.legacy.model import ChannelWithLastValue
label_desc: Use image node_id 20 for calling the LeaderboardApiClient obj's underlying member method code with example usage: obj.get_system_channels(experiment) without return types