code: def test_single_geom_conversion(self):
      path = Polygons([[(0, 0), (1, 1), (2, 0)]])
      geom = path.geom()
      self.assertIsInstance(geom, Polygon)
      self.assertEqual(
          np.array(geom.exterior.coords),
          np.array([[0, 0], [1, 1], [2, 0], [0, 0]]),
      )
  
imports: import numpy
  from holoviews.element.comparison import ComparisonTestCase
  from shapely.geometry import GeometryCollection, Polygon, Point, LineString, LinearRing, MultiPolygon, MultiLineString, MultiPoint
  from geoviews.element import Rectangles, Path, Polygons, Points, Segments
label_desc: Use image node_id 2 for calling the TestPolygons obj's underlying member method code with example usage: obj.test_single_geom_conversion() without return types