code: def test_supported_reset_middle(self):
      dataset = [1, 2, 3, 4, 5]
      it = iterators.MultithreadIterator(
          dataset, 2, repeat=False, **self.options
      )
      it.next()
      it.reset()
  
imports: from __future__ import division
  import copy
  import unittest
  import numpy
  import six
  from chainer import iterators
  from chainer import serializers
  from chainer import testing
label_desc: Use image node_id 13 for calling the TestMultithreadIterator obj's underlying member method code with example usage: obj.test_supported_reset_middle() without return types