code: def test_flip_sequence(self):
      x = jnp.arange(2 * 5).reshape((2, 5))
      seq_lengths = jnp.array([4, 2])
  
      flipped = flip_sequences(
          x, seq_lengths, num_batch_dims=1, time_major=False
      )
  
      self.assertEqual(flipped.shape, (2, 5))
      np.testing.assert_allclose(flipped[0, :4], [3, 2, 1, 0])
      np.testing.assert_allclose(flipped[1, :2], [6, 5])
  
imports: import jax
  import jax.numpy
  import numpy
  from absl.testing import absltest
  from flax import linen
  from flax.linen.recurrent import flip_sequences
label_desc: Use image node_id 13 for calling the RNNTest obj's underlying member method code with example usage: obj.test_flip_sequence() without return types