docstr: Return a Python list of vertex property names.
code: def vertex_property_names(self):
      """
      Return a Python list of vertex property names.
      """
      return self.__client.get_graph_vertex_property_names(
          self.__graph_id
      )
  
imports: import numpy
  import importlib
  from cugraph_service_client.exceptions import CugraphServiceError
  from cugraph_service_client.remote_graph_utils import _transform_to_backend_dtype, _transform_to_backend_dtype_1d, _offsets_to_backend_dtype, MissingModule
label_desc: Use image node_id 20 for calling the RemoteGraph obj's underlying member method code with example usage: obj.vertex_property_names() and returns: self