code: def test_create_no_validation_set(self):
      model = tc.activity_classifier.create(
          self.data,
          features=self.features,
          target=self.target,
          session_id=self.session_id,
          prediction_window=self.prediction_window,
      )
      predictions = model.predict(self.data)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
  import random
  import tempfile
  import math
  import numpy
  from numbers import Number
  from .None import util
  import pytest
  from turicreate.toolkits._internal_utils import _mac_ver
  from turicreate.toolkits._main import ToolkitError
  import uuid
label_desc: Use image node_id 6 for calling the ActivityClassifierCreateStressTests obj's underlying member method code with example usage: obj.test_create_no_validation_set() without return types