code: def reverse(waveform, sample_rate):
      return torch.flip(waveform, [-1])
  
imports: import math
  import random
  from typing import Dict, List, Optional, Tuple, Union
  import numpy
  import torch
  import torchaudio
label_desc: Use image node_id 16 for calling a global function with example usage: reverse(waveform, sample_rate) and returns: torch