code: def mx_layer(self):
      return self.layer
  
file_path: MMdnn/mmdnn/conversion/mxnet/mxnet_graph.py
imports: import os
  import mxnet
  from mmdnn.conversion.common.DataStructure.graph import GraphNode, Graph
label_desc: Use image node_id 4 for calling the MXNetGraphNode obj's underlying member method code with example usage: obj.mx_layer() and returns: self