code: def __init__(self, pos_weight):
      super(BCELossMasked, self).__init__()
      self.pos_weight = pos_weight
  
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 1 to create a new BCELossMasked object from inherited base classes: nn with example: obj = BCELossMasked(pos_weight)