human
I wrote the below code

    def decorator(undecorated_object):
        @wraps(undecorated_object)
        def wrapper(*args, **kwargs):
            config = get_blockdevice_config()
            configured_backend = config.pop('backend')
            skipper = skipUnless((configured_backend == required_backend), 'The    backend    in    the    supplied    configuration    is    not    suitable    for    this    test.    Found:    {!r}.    Required:    {!r}.'.format(configured_backend, required_backend))
            decorated_object = skipper(undecorated_object)
            result = decorated_object(*args, **kwargs)
            return result
        return wrapper
    return decorator

What's a good function header?
assistant
#Here's a good function header.

def require_backend(required_backend):