class_docstr: Connect a variable to a delegating variable.
code: def forward(self, inputs):
      self.retain_inputs((0,))
      # delegate_variable = inputs[0]
      actual_variables = inputs[1:]
      return actual_variables
  
file_path: chainer/chainermn/functions/pseudo_connect.py
imports: import chainer
  from chainer import backend
  import chainer.utils
label_desc: Use image node_id 1 for calling the PseudoConnect obj's underlying member method code with example usage: obj.forward(inputs) and returns: actual_variables