code: def _forward_dense(self, x):
      return self.batch_norm(x.permute(0, 2, 1)).permute(0, 2, 1)
  
imports: import numpy
  import torch
  from torch import nn
  from torch.nn.parameter import Parameter
label_desc: Use image node_id 2 for calling the FastBatchNorm1d obj's underlying member method code with example usage: obj._forward_dense(x) and returns: self