code: def _make_tree(sf):
      model = tc.decision_tree_classifier.create(
          sf, "target", validation_set=None, max_depth=10
      )
  
      tree = DecisionTree.from_model(model)
      return tree
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
  from turicreate.toolkits._decision_tree import DecisionTree, Node
  from turicreate.toolkits._main import ToolkitError
label_desc: Use image node_id 1 for calling a global function with example usage: _make_tree(sf) and returns: tree