code: def test_s2s_forecaster_openvino_methods(self):
      train_data, val_data, test_data = create_data()
      forecaster = Seq2SeqForecaster(
          past_seq_len=24,
          future_seq_len=5,
          input_feature_num=1,
          output_feature_num=1,
          loss="mae",
          lr=0.01,
      )
      forecaster.fit(train_data, epochs=2)
      try:
          pred = forecaster.predict(test_data[0], acceleration=False)
          pred_openvino = forecaster.predict_with_openvino(test_data[0])
          np.testing.assert_almost_equal(pred, pred_openvino, decimal=5)
      except ImportError:
          pass
  
      # test exporting the openvino
      with tempfile.TemporaryDirectory() as tmp_dir_name:
          ckpt_name = os.path.join(tmp_dir_name, "fp32_openvino")
          ckpt_name_q = os.path.join(tmp_dir_name, "int_openvino")
          forecaster.export_openvino_file(
              dirname=ckpt_name, quantized_dirname=ckpt_name_q
          )
  
imports: import numpy
  import tempfile
  import os
  from bigdl.chronos.utils import LazyImport
  from unittest import TestCase
  import pytest
  from ..None import op_torch, op_distributed, op_inference, op_automl
label_desc: Use image node_id 6 for calling the TestChronosModelSeq2SeqForecaster obj's underlying member method code with example usage: obj.test_s2s_forecaster_openvino_methods() without return types