code: def __init__(self, feat_stride):
      super(DummyExtractor, self).__init__()
      self.feat_stride = feat_stride
  
imports: import numpy
  import chainer
  from chainercv.links.model.faster_rcnn import FasterRCNN
  from chainercv.utils import generate_random_bbox
label_desc: Use image node_id 1 to create a new DummyExtractor object from inherited base classes: chainer with example: obj = DummyExtractor(feat_stride)