code: def convert_array_dict_to_df(d):
      df_d = {
          k: cudf.DataFrame({"_SRC_": s, "_DST_": d, "_EDGE_ID_": e})
          for k, (s, d, e) in d.items()
      }
      return df_d
  
file_path: cugraph/python/cugraph/cugraph/tests/gnn/test_dgl_uniform_sampler.py
imports: import pytest
  import pandas
  import numpy
  import cudf
  import cupy
  from cugraph.gnn.dgl_extensions.dgl_uniform_sampler import DGLUniformSampler
label_desc: Use image node_id 2 for calling a global function with example usage: convert_array_dict_to_df(d) and returns: df_d