code: def shape_transform(x):
      """Tranform the size of the tensors to fit for conv input."""
      return torch.unsqueeze(torch.transpose(x, 1, 2), 3)
  
file_path: OpenNMT-py/onmt/utils/cnn_factory.py
imports: import torch
  import torch.nn
  import torch.nn.init
  import onmt.modules
label_desc: Use image node_id 1 for calling a global function with example usage: shape_transform(x) and returns: torch