code: def get_son(self, name, path, set_flag=False):
      return self.src_graph.get_son(name, path, set_flag)
  
file_path: MMdnn/mmdnn/conversion/common/DataStructure/parser.py
imports: import numpy
  import mmdnn.conversion.common.IR.graph_pb2
  from mmdnn.conversion.common.IR.graph_pb2 import NodeDef, GraphDef, DataType
label_desc: Use image node_id 4 for calling the Parser obj's underlying member method code with example usage: obj.get_son(name, path, set_flag) and returns: self