class_docstr: Test of the MultiInterface.
class_docstr_tok: ["Test","of","the","MultiInterface","."]
code: def test_polygon_dtype(self):
      poly = Polygons(
          [{"x": [1, 2, 3], "y": [2, 0, 7]}], datatype=[self.datatype]
      )
      self.assertIs(poly.interface, self.interface)
      self.assertEqual(poly.interface.dtype(poly, "x"), np.dtype("int"))
  
imports: import logging
  import numpy
  import pandas
  from param import get_logger
  from holoviews.core.data import Dataset, MultiInterface
  from holoviews.element import Path, Points, Polygons
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 51 for calling the GeomTests obj's underlying member method code with example usage: obj.test_polygon_dtype() without return types