code: def setUp(self):
      self.dataset = SampleDataset(self.iterable)
  
imports: import numpy
  import unittest
  from chainercv.chainer_experimental.datasets.sliceable import GetterDataset
  from chainercv.utils import testing
label_desc: Use image node_id 1 for calling the TestGetterDataset obj's underlying member method code with example usage: obj.setUp() without return types