code: def at(self) -> RefIndexer:
      return RefIndexer(self)
  
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 2 for calling the RefView obj's underlying member method code with example usage: obj.at() and returns: RefIndexer