to

infix fun <A, B, C> Pair<A, B>.to(that: C): Triple<A, B, C>
infix fun <A, B, C, D> Triple<A, B, C>.to(that: D): Quartet<A, B, C, D>
infix fun <A, B, C, D, E> Quartet<A, B, C, D>.to(that: E): Quintet<A, B, C, D, E>