code: def spectral_ops(self):
      a = torch.randn(10)
      b = torch.randn(10, 8, 4, 2)
      return len(
          torch.stft(a, 8),
          torch.stft(a, torch.tensor(8)),
          torch.istft(b, 8),
          torch.bartlett_window(2, dtype=torch.float),
          torch.blackman_window(2, dtype=torch.float),
          torch.hamming_window(4, dtype=torch.float),
          torch.hann_window(4, dtype=torch.float),
          torch.kaiser_window(4, dtype=torch.float),
      )
  
imports: import math
  import torch
label_desc: Use image node_id 2 for calling the SpectralOpsModule obj's underlying member method code with example usage: obj.spectral_ops() and returns: len