code: def test_create_with_deprecated_num_trees(self):
      num_trees = 10
      model = tc.random_forest_regression.create(
          self.dtrain,
          target="label",
          validation_set=self.dtest,
          num_trees=num_trees,
      )
      self.assertTrue(model is not None)
      self.assertEqual(model.num_trees, num_trees)
  
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 sys
  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 3 for calling the RandomForestRegressionTest obj's underlying member method code with example usage: obj.test_create_with_deprecated_num_trees() without return types