code: def testSparsifySparseXlaCall(self):
      # Test sparse lowering of XLA call
      def func(M):
          return 2 * M
  
      M = jnp.arange(6).reshape(2, 3)
      Msp = BCOO.fromdense(M)
  
      out_dense = func(M)
      out_sparse = self.sparsify(jit(func))(Msp)
      self.assertArraysEqual(out_dense, out_sparse.todense())
  
imports: from functools import partial
  import math
  import operator
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import jax
  from jax import config, jit, lax
  import jax.numpy
  import jax._src.test_util
  from jax.experimental.sparse import BCOO, BCSR, sparsify, todense, SparseTracer
  from jax.experimental.sparse.transform import arrays_to_spvalues, spvalues_to_arrays, sparsify_raw, SparsifyValue, SparsifyEnv
  from jax.experimental.sparse.util import CuSparseEfficiencyWarning
  from jax.experimental.sparse import test_util
label_desc: Use image node_id 26 for calling the SparsifyTest obj's underlying member method code with example usage: obj.testSparsifySparseXlaCall() and returns: unknown