code: def append(self, module):
      self.add_module(str(self._num_modules), module)
      self._num_modules += 1
      return self
  
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 Seq obj's underlying member method code with example usage: obj.append(module) and returns: self