code: def get_all_vertice_helper(self, vhash):
      vhash[self.gid] = self.get_dict()
      if self.left:
          if not self.left.gid in vhash:
              self.left.get_all_vertice_helper(vhash)
      if self.right:
          if not self.right.gid in vhash:
              self.right.get_all_vertice_helper(vhash)
  
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 9 for calling the GBDTNode obj's underlying member method code with example usage: obj.get_all_vertice_helper(vhash) without return types