code: def infer_walk_generator(self):
      for nodes, idx in self.node_generator():
          yield [nodes]
  
file_path: PGL/apps/Graph4Rec/env_run/src/datasets/walk.py
imports: import os
  import sys
  import time
  import warnings
  import numpy
  from collections import defaultdict
  from pgl.utils.logger import log
  from pgl.distributed import DistGraphClient, DistGraphServer
  from utils.config import prepare_config
  from datasets.helper import stream_shuffle_generator, AsynchronousGenerator
  from datasets.node import NodeGenerator
  import datasets.sampling
label_desc: Use image node_id 4 for calling the WalkGenerator obj's underlying member method code with example usage: obj.infer_walk_generator() without return types