code: def testScheduledSampleCountMid(self):
      _, _, ss_out = self._run_scheduled_sample_func(
          common_video.scheduled_sample_count, 5, 10
      )
      positive_count = np.sum(ss_out > 0)
      self.assertEqual(positive_count, 5)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import numpy
  from tensor2tensor.layers import common_video
  from tensor2tensor.utils import test_utils
  import tensorflow.compat.v1
label_desc: Use image node_id 6 for calling the CommonVideoTest obj's underlying member method code with example usage: obj.testScheduledSampleCountMid() without return types