code: def __init__(self):
      self._context = None
      self.initialized = False
      self.model = None
      self.processor = None
      self.device = None
      # Sampling rate for Wav2Vec model must be 16k
      self.expected_sampling_rate = 16_000
  
file_path: serve/examples/speech2text_wav2vec2/handler.py
imports: import torch
  import torchaudio
  from transformers import AutoProcessor, AutoModelForCTC
  import io
label_desc: Use image node_id 1 to create a new Wav2VecHandler object from inherited base classes: object with example: obj = Wav2VecHandler()