code: def test_get_many_items(self):
      index = slice(1, 3)
      expected = self.graphs_dicts_out[index]
  
      graphs = utils_np.data_dicts_to_graphs_tuple(self.graphs_dicts_in)
      graphs2 = utils_np.get_graph(graphs, index)
      actual = utils_np.graphs_tuple_to_data_dicts(graphs2)
  
      for ex, ac in zip(expected, actual):
          for k, v in ex.items():
              self.assertAllClose(v, ac[k])
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import itertools
  from absl.testing import parameterized
  from graph_nets import utils_np
  from graph_nets.tests import test_utils
  import networkx
  import numpy
  from six.moves import range
  import tensorflow
label_desc: Use image node_id 2 for calling the GetItemTest obj's underlying member method code with example usage: obj.test_get_many_items() without return types