code: def test_idxmapping_unsorted_clone(self):
      data = [("B", 1), ("C", 2), ("A", 3)]
      ndmap = MultiDimensionalMapping(data, sort=False).clone()
      self.assertEqual(ndmap.keys(), ["B", "C", "A"])
  
imports: import numpy
  from holoviews import Dataset, HoloMap
  from holoviews.core import Dimension
  from holoviews.core.ndmapping import MultiDimensionalMapping, NdMapping, UniformNdMapping
  from holoviews.core.overlay import Overlay
  from holoviews.element import Curve
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 21 for calling the NdIndexableMappingTest obj's underlying member method code with example usage: obj.test_idxmapping_unsorted_clone() without return types