In this regard, it is similar in concept to the mechanism (formerly known as "TLS Extractors") described in [RFC5705]. While no current IETF protocols require this feature, non-IETF protocols are expected to take advantage of it in the near future. Additionally, a number of protocols have found the mechanism described in [RFC5705] to be useful in this regard, so it is highly probable that IETF protocols may also start using this feature.