code: def test_multi_poly_empty_holes(self):
      poly = Polygons([])
      self.assertFalse(poly.interface.has_holes(poly))
      self.assertEqual(poly.interface.holes(poly), [])
  
imports: import numpy
  from holoviews import Box, Dataset, Ellipse, Path, Polygons
  from holoviews.core.data.interface import DataError
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 4 for calling the PolygonsTests obj's underlying member method code with example usage: obj.test_multi_poly_empty_holes() without return types