code: def _commonprefix(strings: Iterable[str]) -> str:
      # Similar to os.path.commonprefix
      if not strings:
          return ""
  
      else:
          s1 = min(strings)
          s2 = max(strings)
  
          for i, c in enumerate(s1):
              if c != s2[i]:
                  return s1[:i]
  
          return s1
  
imports: from __future__ import annotations
  from abc import ABCMeta, abstractmethod
  from typing import AsyncGenerator, Callable, Iterable, Sequence
  from prompt_toolkit.document import Document
  from prompt_toolkit.eventloop import aclosing, generator_to_async_generator
  from prompt_toolkit.filters import FilterOrBool, to_filter
  from prompt_toolkit.formatted_text import AnyFormattedText, StyleAndTextTuples
label_desc: Use image node_id 3 for calling a global function with example usage: _commonprefix(strings) and returns: str, s1, s1