code: def deprecate(func):
    
    @wraps(func)
    def wrapper(*args, **kwargs):
      warn("Deprecated, this will be removed in the future", DeprecationWarning)
      return func(*args, **kwargs)
    wrapper.__doc__ = "Deprecated.\n" + (wrapper.__doc__ or "")
    return wrapper
docs: A deprecation warning emmiter as a decorator.