class_docstr: Linear decoder for speaker diarization
code: def num_spk(self):
      return self._num_spk
  
imports: import torch
  from espnet2.diar.decoder.abs_decoder import AbsDecoder
label_desc: Use image node_id 3 for calling the LinearDecoder obj's underlying member method code with example usage: obj.num_spk() and returns: self