code: def create_channel(
      self, experiment, name, channel_type
  ) -> ChannelWithLastValue:
      pass
  
imports: from abc import ABC, abstractmethod
  from typing import Dict
  from neptune.legacy.model import ChannelWithLastValue
label_desc: Use image node_id 16 for calling the LeaderboardApiClient obj's underlying member method code with example usage: obj.create_channel(experiment, name, channel_type) without return types