code: def speaker_names(self):
      return list(self.name_to_id.keys())
  
file_path: TTS/TTS/tts/layers/xtts/xtts_manager.py
imports: import torch
label_desc: Use image node_id 4 for calling the SpeakerManager obj's underlying member method code with example usage: obj.speaker_names() and returns: list