class_docstr: Class to link multiple Brain objects.
code: def toggle_playback(self):
      self.leader.toggle_playback()
  
file_path: mne-python/mne/viz/_brain/_linkviewer.py
imports: import numpy
  from ...utils import warn
  from ..ui_events import link
label_desc: Use image node_id 7 for calling the _LinkViewer obj's underlying member method code with example usage: obj.toggle_playback() without return types