class_docstr: SampleTest
      
docstr: test_node2vec_sample
          
code: def test_node2vec_sample(self):
      """test_node2vec_sample"""
      walks = node2vec_sample(self.graph, range(10), 3)
  
file_path: PGL/legacy/pgl/tests/test_sample.py
imports: import unittest
  import os
  import json
  import numpy
  from pgl.redis_graph import RedisGraph
  from pgl.sample import graphsage_sample
  from pgl.sample import node2vec_sample
label_desc: Use image node_id 3 for calling the SampleTest obj's underlying member method code with example usage: obj.test_node2vec_sample() without return types