code: def _getitem(self, tracer, idx) -> Array:
      from jax._src.state.primitives import (
          ref_get,
      )  # pytype: disable=import-error
  
      return ref_get(tracer, idx)
  
imports: from __future__ import annotations
  from collections.abc import Sequence
  import dataclasses
  import math
  from typing import Any, Generic, TypeVar, Union
  from jax._src import core
  from jax._src import effects
  from jax._src import pretty_printer
  from jax._src.state import indexing
  from jax._src.util import safe_map, safe_zip
  from jax._src.typing import Array
label_desc: Use image node_id 9 for calling the AbstractRef obj's underlying member method code with example usage: obj._getitem(tracer, idx) and returns: ref_get