code: def load_vocoder(vocoder_path, vocoder_cfg_path, use_cuda=True):
      with open(vocoder_cfg_path) as f:
          cfg = json.load(f)
      vocoder = CodeHiFiGANVocoder(vocoder_path, cfg).eval()
      if use_cuda:
          vocoder = vocoder.cuda()
      return vocoder
  
file_path: fairseq/examples/textless_nlp/dgslm/vocoder_hifigan/generate_stereo_waveform.py
imports: import ast
  import argparse
  import json
  import logging
  from pathlib import Path
  import soundfile
  import torch
  from tqdm import tqdm
  from fairseq import utils
  from fairseq.models.text_to_speech.vocoder import CodeHiFiGANVocoder
label_desc: Use image node_id 3 for calling a global function with example usage: load_vocoder(vocoder_path, vocoder_cfg_path, use_cuda) and returns: vocoder