code: def play_next(self, stream_url=None, offset=0, opaque_token=None):
          
  
          directive = self._play_directive('REPLACE_ENQUEUED')
          directive['audioItem'] = self._audio_item(stream_url=stream_url, offset=offset, opaque_token=opaque_token)
          self._response['directives'].append(directive)
          return self
docs: Replace all streams in the queue but does not impact the currently playing stream.