code: def __init__(self, n_fg_class):
      super(DummySSD, self).__init__(
          extractor=DummyExtractor(),
          multibox=Multibox(
              n_class=n_fg_class + 1, aspect_ratios=((2,), (2, 3), (2,))
          ),
          steps=(0.1, 0.25, 1),
          sizes=(0.1, 0.25, 1, 1.2),
          mean=np.array((0, 1, 2)).reshape((-1, 1, 1)),
      )
  
imports: import numpy
  import unittest
  import chainer
  from chainer import testing
  from chainer.testing import attr
  from chainercv.links.model.ssd import Multibox
  from chainercv.links.model.ssd import SSD
  from chainercv.utils import assert_is_detection_link
label_desc: Use image node_id 1 to create a new DummySSD object from inherited base classes: SSD with example: obj = DummySSD(n_fg_class)