code: def __init__(self):
      super(DummyYOLO, self).__init__()
  
      self.extractor = mock.Mock()
      self.extractor.insize = self._insize
  
imports: import mock
  import numpy
  import unittest
  import chainer
  from chainer.backends.cuda import to_cpu
  from chainer import testing
  from chainer.testing import attr
  from chainercv.links.model.yolo import YOLOBase
  from chainercv.utils import assert_is_detection_link
  from chainercv.utils import generate_random_bbox
label_desc: Use image node_id 1 to create a new DummyYOLO object from inherited base classes: YOLOBase with example: obj = DummyYOLO()