code: def test_center(self):
      @partial(jnp.vectorize, signature="(n)->(),(n)")
      def center(array):
          bias = jnp.mean(array)
          debiased = array - bias
          return bias, debiased
  
      b, a = center(jnp.arange(3.0))
      self.assertEqual(a.shape, (3,))
      self.assertEqual(b.shape, ())
      self.assertAllClose(1.0, b, check_dtypes=False)
  
      b, a = center(jnp.arange(6.0).reshape(2, 3))
      self.assertEqual(a.shape, (2, 3))
      self.assertEqual(b.shape, (2,))
      self.assertAllClose(jnp.array([1.0, 4.0]), b, check_dtypes=False)
  
imports: from functools import partial
  from absl.testing import absltest
  import numpy
  import jax
  from jax import numpy
  from jax._src import test_util
  from jax import config
label_desc: Use image node_id 7 for calling the VectorizeTest obj's underlying member method code with example usage: obj.test_center() and returns: bias,  debiased