code: def test_add_vertex_annotations(self):
      annotator = PathAnnotator(Path([]), vertex_annotations=["Label"])
      self.assertIn("Label", annotator.object)
  
imports: from holoviews import Overlay
  from holoviews.annotators import PathAnnotator, PointAnnotator, annotate
  from holoviews.element import Path, Points, Table
  from holoviews.element.tiles import EsriStreet, Tiles
  from holoviews.tests.plotting.bokeh.test_plot import TestBokehPlot
label_desc: Use image node_id 3 for calling the TestPathAnnotator obj's underlying member method code with example usage: obj.test_add_vertex_annotations() without return types