methodbun.RedisClient.spopspop(key: KeyLike): Promise<null | string>;Remove and return a random member from a set@param keyThe set key@returnsPromise that resolves with the removed member, or null if the set is emptyspop(key: KeyLike,count: number): Promise<null | string[]>;Remove and return count members from the set@param keyThe set key@returnsPromise that resolves with the removed members, or null if the set is empty