code: def get_dict(self):
      d = {
          "id": self.gid,
          "type": GBDTNode.typeid2type[self.node_type],
          "value": self.value,
      }
      if self.node_type != GBDTNode.NODE_TYPE_LEAF:
          d["name"] = self.node_name
      return d
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import turicreate
  import unittest
  import json
  import random
  import numpy
  import pytest
label_desc: Use image node_id 8 for calling the GBDTNode obj's underlying member method code with example usage: obj.get_dict() and returns: d