code: def _slice_signature(eqn, args_consumed):
      del args_consumed  # unused here
      in_aval = eqn.invars[0].aval
      start_indices = eqn.params["start_indices"]
      limit_indices = eqn.params["limit_indices"]
      strides = eqn.params["strides"] or (1,) * len(start_indices)
      idx = tuple(
          slice(*tup)
          for tup in util.safe_zip(
              start_indices, limit_indices, strides
          )
      )
      mask = np.zeros(in_aval.shape, dtype=bool)
      mask[idx] = True
      return KeyReuseSignature([Sink(0, mask)], [Source(0)])
  
imports: from __future__ import annotations
  from collections import defaultdict
  from functools import reduce
  from typing import Any, Callable
  import jax
  from jax import core
  from jax import lax
  from jax import tree_util
  from jax._src import api_util
  from jax._src import linear_util
  from jax._src import pjit
  from jax._src import prng
  from jax._src import random
  from jax._src import util
  from jax._src.debugging import debug_callback_p
  from jax._src.interpreters import partial_eval
  from jax.experimental.key_reuse._common import consume_p, unconsumed_copy_p, assert_consumed_value_p, KeyReuseError, Sink, Source, KeyReuseSignature
  import numpy
label_desc: Use image node_id 4 for calling a global function with example usage: _slice_signature(eqn, args_consumed) and returns: KeyReuseSignature