code: def test_single_geom_conversion(self):
      segs = Segments([(0, 0, 1, 1)])
      geom = segs.geom()
      self.assertIsInstance(geom, LineString)
      self.assertEqual(
          np.array(geom.coords), np.array([[0, 0], [1, 1]])
      )
  
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 TestSegments obj's underlying member method code with example usage: obj.test_single_geom_conversion() without return types