code: def test_mg_graph_copy():
      G = cugraph.MultiGraph(directed=True)
      G_c = copy.deepcopy(G)
      assert type(G) == type(G_c)
  
imports: import gc
  import random
  import pytest
  import copy
  import cupy
  import cudf
  import cugraph
  import dask_cudf
  import cugraph.dask
  import cugraph.dask.comms.comms
  from cugraph.testing import utils
  from dask.distributed import wait
  from pylibcugraph import ResourceHandle
  from pylibcugraph import bfs
  from cudf.testing.testing import assert_frame_equal
  from cugraph.dask.traversal.bfs import convert_to_cudf
  from cugraph.dask.common.input_utils import get_distributed_data
  from pylibcugraph.testing.utils import gen_fixture_params_product
  from cugraph.dask.common.part_utils import persist_dask_df_equal_parts_per_worker
label_desc: Use image node_id 10 for calling a global function with example usage: test_mg_graph_copy() without return types