code: def sample_graph(G, start_list):
      output_ddf = uniform_neighbor_sample_mg(
          G, start_list=start_list, fanout_vals=[10, 25]
      )
      df = output_ddf.compute()
      return df
  
file_path: cugraph/benchmarks/shared/build_cugraph_ucx/test_cugraph_sampling.py
imports: from dask_cuda import LocalCUDACluster
  from dask.distributed import Client
  import rmm
  import numpy
  from time import perf_counter_ns
  from cugraph.dask.comms import comms
  from cugraph.dask import uniform_neighbor_sample
  from cugraph import MultiGraph
  from cugraph.generators import rmat
label_desc: Use image node_id 3 for calling a global function with example usage: sample_graph(G, start_list) and returns: df