code: def test_generator_flow_StellarGraphs():
      generator = PaddedGraphGenerator(graphs=graphs)
      graph_ilocs = [1, 2, 0]
  
      seq_1 = generator.flow(graph_ilocs)
      seq_2 = generator.flow([graphs[1], graphs[2], graphs[0]])
  
      assert len(seq_1) == len(seq_2) == 3
  
      for (values_1, targets_1), (values_2, targets_2) in zip(
          seq_1, seq_2
      ):
          assert len(values_1) == len(values_2) == 3
          assert targets_1 is targets_2 is None
  
          for arr_1, arr_2 in zip(values_1, values_2):
              np.testing.assert_array_equal(arr_1, arr_2)
  
imports: from stellargraph.core.graph import *
  from stellargraph.mapper.padded_graph_generator import PaddedGraphGenerator, PaddedGraphSequence
  import numpy
  import pytest
  from ..test_utils.graphs import example_graph_random, example_graph, example_hin_1
label_desc: Use image node_id 15 for calling a global function with example usage: test_generator_flow_StellarGraphs() without return types