code: def test_lstms_are_interleaved(self):
      lstm = StackedAlternatingLstm(3, 7, 8)
      for i, layer in enumerate(lstm.lstm_layers):
          if i % 2 == 0:
              assert layer.go_forward
          else:
              assert not layer.go_forward
  
file_path: allennlp/tests/modules/stacked_alternating_lstm_test.py
imports: import numpy
  import torch
  from torch.nn.utils.rnn import pack_padded_sequence, pad_packed_sequence
  from allennlp.modules.stacked_alternating_lstm import StackedAlternatingLstm
  from allennlp.common.testing import AllenNlpTestCase
label_desc: Use image node_id 2 for calling the TestStackedAlternatingLstm obj's underlying member method code with example usage: obj.test_lstms_are_interleaved() without return types