code: def test_simple_holoselect(self):
      self.assertEqual(
          self.img_map.select(a=0, b=1), self.img_map[0, 1]
      )
  
imports: import datetime
  from itertools import product
  import numpy
  import pandas
  from holoviews.core import HoloMap
  from holoviews.element import Contours, Curve, Image
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 2 for calling the DimensionedSelectionTest obj's underlying member method code with example usage: obj.test_simple_holoselect() without return types