code: def output_sample_rate(self) -> int:
      return self.cfg.get("sampling_rate", 16_000)
  
file_path: textlesslib/textless/vocoders/hifigan/vocoder.py
imports: import torch
  import torch.nn
  import numpy
  from .generator import CodeGenerator
  import json
  from typing import Union
  from pathlib import Path
  from textless.checkpoint_manager import CHECKPOINT_MANAGER
label_desc: Use image node_id 4 for calling the CodeHiFiGANVocoder obj's underlying member method code with example usage: obj.output_sample_rate() and returns: self