code: def build(self):
      if len(self.model.outputs) > 1:
          for idx, output in enumerate(self.model.outputs):
              if len(output.shape) > 0:
                  eval_node = idx
                  break
  
          output = self.model[eval_node].owner
      else:
          output = self.model.outputs[0].owner
  
      self.layer_map[output.uid] = CntkGraphNode(output)
      self._traverse_graph(output)
  
      super(CntkGraph, self).build()
  
file_path: MMdnn/mmdnn/conversion/cntk/cntk_graph.py
imports: import cntk
  from mmdnn.conversion.common.DataStructure.graph import GraphNode, Graph
label_desc: Use image node_id 3 for calling the CntkGraph obj's underlying member method code with example usage: obj.build() without return types