methodRedisClient.sismembersismember(key: KeyLike,member: string): Promise<boolean>;Check if a value is a member of a set@param keyThe set key@param memberThe member to check@returnsPromise that resolves with true if the member exists, false otherwiseReferenced typestype KeyLike = string | ArrayBufferView | Blob
RedisClient.sismemberRedisClient.sismember