code: def get(self, key: str, default: str | None = None) -> str | None:
      items = self.getall(key)
      return items[0] if items else default
  
imports: from __future__ import annotations
  import re
  from typing import Callable, Dict, Iterable, Iterator, Pattern
  from typing import Match
  from .regex_parser import AnyNode, Lookahead, Node, NodeSequence, Regex, Repeat, Variable, parse_regex, tokenize_regex
label_desc: Use image node_id 3 for calling the Variables obj's underlying member method code with example usage: obj.get(key, default) and returns: unknown