code: def test_dist_optimizer(g):
      dist_optimizer_check_store(g)
  
imports: import json
  import os
  from itertools import product
  import dgl
  import dgl.backend
  import numpy
  from dgl.distributed import edge_split, load_partition_book, node_split
label_desc: Use image node_id 21 for calling a global function with example usage: test_dist_optimizer(g) without return types