code: def setUp(self):
      self.link = DummyFCIS(
          n_anchor_base=1,
          feat_stride=16,
          n_fg_class=20,
          n_roi=1,
          roi_size=21,
          min_size=self.min_size,
          max_size=self.max_size,
      )
  
imports: import numpy
  import unittest
  import chainer
  from chainer import testing
  from chainer.testing import attr
  from chainercv.experimental.links.model.fcis import FCIS
  from chainercv.utils import assert_is_instance_segmentation_link
  from chainercv.utils import generate_random_bbox
label_desc: Use image node_id 1 for calling the TestFCISPrepare obj's underlying member method code with example usage: obj.setUp() without return types