docstr: An alias of number_of_vertices(). This function is added for NetworkX
  compatibility.
docstr_tok: ["An","alias","of","number_of_vertices","(",")",".","This","function","is","added","for","NetworkX","compatibility","."]
code: def number_of_nodes(self):
      """
      An alias of number_of_vertices(). This function is added for NetworkX
      compatibility.
      """
      return self.number_of_vertices()
  
imports: from cugraph.structure import graph_primtypes_wrapper
  from cugraph.structure.graph_primtypes_wrapper import Direction
  from cugraph.structure.symmetrize import symmetrize
  from cugraph.structure.number_map import NumberMap
  import cugraph.dask.common.mg_utils
  import cudf
  import dask_cudf
  import cugraph.dask.comms.comms
  import pandas
  import numpy
  import warnings
  from cugraph.dask.structure import replication
  from typing import Union, Dict
  from pylibcugraph import get_two_hop_neighbors, select_random_vertices
  from pylibcugraph import ResourceHandle, GraphProperties, SGGraph
label_desc: Use image node_id 20 for calling the simpleGraphImpl obj's underlying member method code with example usage: obj.number_of_nodes() and returns: self