code: def test_multiline_adjlist_delimiter(self):
      fh = io.BytesIO()
      G = nx.path_graph(3)
      nx.write_multiline_adjlist(G, fh, delimiter=":")
      fh.seek(0)
      H = nx.read_multiline_adjlist(fh, nodetype=int, delimiter=":")
      assert nodes_equal(list(H), list(G))
      assert edges_equal(list(H.edges()), list(G.edges()))
  
imports: import io
  import pytest
  import networkx
  from networkx.utils import edges_equal, graphs_equal, nodes_equal
label_desc: Use image node_id 8 for calling the TestMultilineAdjlist obj's underlying member method code with example usage: obj.test_multiline_adjlist_delimiter() without return types