docs: def get_kwargs_index(target) -> int:
      """
      Returns the index of the "**kwargs" parameter if such a parameter exists in
      the function arguments or -1 otherwise.
  
      :param target:
          The target function for which the kwargs index should be determined
      :return:
          The keyword arguments index if it exists or -1 if not
      """
  
      code = target.__code__
  
      if not bool(code.co_flags & inspect.CO_VARKEYWORDS):
          return -1
  
      return (
          code.co_argcount +
          code.co_kwonlyargcount +
          (1 if code.co_flags & inspect.CO_VARARGS else 0)
      )