code: def update(self, inner_aval=None, memory_space=None):
      inner_aval = self.inner_aval if inner_aval is None else inner_aval
      memory_space = (
          self.memory_space if memory_space is None else memory_space
      )
      return AbstractMemoryRef(inner_aval, memory_space)
  
imports: from __future__ import annotations
  from collections.abc import Sequence
  import dataclasses
  import enum
  import functools
  from typing import Any
  from jax._src import core
  from jax._src import dtypes
  from jax._src import state
  from jax._src import tree_util
  from jax._src import util
  import jax.numpy
  from jax._src.pallas import core
label_desc: Use image node_id 4 for calling the AbstractMemoryRef obj's underlying member method code with example usage: obj.update(inner_aval, memory_space) and returns: AbstractMemoryRef