code: def for_body_accum(i, refs):
      x_ref, accum_ref = refs
      accum_ref[i + 1] = accum_ref[i] + x_ref[i]
  
imports: from functools import partial
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import jax
  from jax import random
  from jax._src import test_util
  from jax._src.lax.control_flow import for_loop
  import jax.numpy
  from jax import config
label_desc: Use image node_id 9 for calling a global function with example usage: for_body_accum(i, refs) without return types