code: def concat(self, inputs, axis, name):
      fluid = import_fluid()
      output = fluid.layers.concat(
          input=inputs,
          axis=axis,
          name=self.get_unique_output_name(name, "concat"),
      )
      return output
  
imports: from __future__ import print_function
  from builtins import str
  from past.builtins import basestring
  from builtins import object
  import sys
  import os
  import math
  import numpy
label_desc: Use image node_id 18 for calling the Network obj's underlying member method code with example usage: obj.concat(inputs, axis, name) and returns: output