code: def join(self, other):
      assert isinstance(other, AbstractMemoryRef)
      return AbstractMemoryRef(
          self.inner_aval.join(other.inner_aval), self.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 3 for calling the AbstractMemoryRef obj's underlying member method code with example usage: obj.join(other) and returns: AbstractMemoryRef