code: def _make_ring_fn(n, m):
      _, eigs = _make_ring(n)
  
      def ring_action(x):
          degree = 2 * x
          lnbr = jnp.roll(x, 1)
          rnbr = jnp.roll(x, -1)
          return degree - lnbr - rnbr
  
      return ring_action, eigs, m
  
imports: import functools
  import re
  import os
  import unittest
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import scipy.linalg
  import scipy.sparse
  import jax
  from jax import config
  from jax._src import test_util
  from jax.experimental.sparse import linalg, bcoo
  import jax.numpy
label_desc: Use image node_id 10 for calling a global function with example usage: _make_ring_fn(n, m) and returns: ring_action,  eigs,  m, unknown