code: def test_multihead_kv_args(self):
      key1, key2 = random.split(random.key(0), 2)
      query = random.uniform(key1, (3, 5))
      key_value = random.uniform(key1, (9, 5))
      module = nn.MultiHeadDotProductAttention(
          num_heads=8,
          qkv_features=16,
          kernel_init=initializers.ones,
          bias_init=initializers.zeros,
          deterministic=False,
      )
      y0, v0 = module.init_with_output(
          key2, query, inputs_k=key_value, inputs_v=key_value
      )
      y1, v1 = module.init_with_output(key2, query, inputs_k=key_value)
      with self.assertWarnsRegex(
          DeprecationWarning,
          "The inputs_kv arg will be deprecated soon.",
      ):
          y2, v2 = module.init_with_output(
              key2, query, inputs_kv=key_value
          )
      self.assertTrue((y0 == y1).all() and (y1 == y2).all())
      self.assertTrue(
          jax.tree_util.tree_all(
              jax.tree_map(
                  lambda x, y, z: (x == y).all() and (y == z).all(),
                  v0,
                  v1,
                  v2,
              )
          )
      )
  
      with self.assertRaisesRegex(
          ValueError,
          "`inputs_k` cannot be None if `inputs_v` is not None.",
      ):
          y3, v3 = module.init_with_output(
              key2, query, inputs_v=key_value
          )
      with self.assertRaisesRegex(
          ValueError,
          "If either `inputs_k` or `inputs_v` is not None, `inputs_kv` must be None.",
      ):
          y3, v3 = module.init_with_output(
              key2, query, inputs_kv=key_value, inputs_v=key_value
          )
      with self.assertRaisesRegex(
          ValueError,
          "If either `inputs_k` or `inputs_v` is not None, `inputs_kv` must be None.",
      ):
          y3, v3 = module.init_with_output(
              key2, query, key_value, key_value, inputs_kv=key_value
          )
  
imports: import jax
  import jax.numpy
  import numpy
  from absl.testing import absltest, parameterized
  from jax import lax, random
  from jax.nn import initializers
  from flax import errors, jax_utils
  from flax import linen
  from flax.core import pop
label_desc: Use image node_id 10 for calling the AttentionTest obj's underlying member method code with example usage: obj.test_multihead_kv_args() without return types