code: def peek(self) -> RenderableQueue:
      return self._list[self._idx]
  
imports: from hail import ir
  import abc
  from typing import Sequence, MutableSequence, List, Set, Dict, Optional
  from collections import namedtuple
label_desc: Use image node_id 3 for calling the RQStack obj's underlying member method code with example usage: obj.peek() and returns: self