code: def test_duplicate_dim_select(self):
      selection = self.duplicate_map.select(
          x=(None, 0.5), y=(None, 0.5)
      )
      self.assertEqual(
          selection, self.duplicate_map[:0.5, :0.5, :0.5, :0.5]
      )
  
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 11 for calling the DimensionedSelectionTest obj's underlying member method code with example usage: obj.test_duplicate_dim_select() without return types