code: def setUpClass(self, warm_start=None):
      self.feature = "drawing"
      self.target = "label"
      self.check_cross_sf = _build_bitmap_data()
      self.stroke_sf = _build_stroke_data()
      self.warm_start = warm_start
      self.max_iterations = 10
      self.check_cross_model = _tc.drawing_classifier.create(
          self.check_cross_sf,
          self.target,
          feature=self.feature,
          max_iterations=self.max_iterations,
          warm_start=warm_start,
      )
      self.stroke_model = _tc.drawing_classifier.create(
          self.stroke_sf,
          self.target,
          feature=self.feature,
          max_iterations=1,
          warm_start=warm_start,
      )
      self.trains = [self.check_cross_sf, self.stroke_sf]
      self.models = [self.check_cross_model, self.stroke_model]
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import turicreate
  from turicreate.toolkits._main import ToolkitError
  import numpy
  import tempfile
  from array import array
  import sys
  from .None import util
  import unittest
label_desc: Use image node_id 1 for calling the DrawingClassifierTest obj's underlying member method code with example usage: obj.setUpClass(warm_start) without return types