docstr: Check the summary function. Compare with the answer supplied as
  a lambda function for each field. Uses the same answers as test_get.
docstr_tok: ["Check","the","summary","function",".","Compare","with","the","answer","supplied","as","a","lambda","function","for","each","field",".","Uses","the","same","answers","as","test_get","."]
code: def test_summary(self):
      """
      Check the summary function. Compare with the answer supplied as
      a lambda function for each field. Uses the same answers as test_get.
      """
      model = self.model
      print(model.summary())
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
  import math
  import uuid
  import random
  import copy
  from turicreate.toolkits import evaluation
  from turicreate.toolkits._main import ToolkitError
  import shutil
  import numpy
  from array import array
  import os
label_desc: Use image node_id 5 for calling the DecisionTreeRegressionTest obj's underlying member method code with example usage: obj.test_summary() without return types