code: def _make_masks(ilens, olens):
      in_masks = sequence_mask(ilens)
      out_masks = sequence_mask(olens)
      return out_masks.unsqueeze(-1) & in_masks.unsqueeze(-2)
  
imports: import math
  import numpy
  import torch
  from torch import nn
  from inspect import signature
  from torch.nn import functional
  from TTS.tts.utils.generic_utils import sequence_mask
  from TTS.tts.utils.ssim import ssim
label_desc: Use image node_id 5 for calling the GuidedAttentionLoss obj's underlying member method code with example usage: obj._make_masks(ilens, olens) and returns: unknown