This member is added by an implicit conversion from ApplyConverter[L] to
any2stringadd[ApplyConverter[L]] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from ApplyConverter[L] to
StringFormat[ApplyConverter[L]] performed by method StringFormat in scala.Predef.
ApplyConverter allows generic conversion of functions of type
(T1, T2, ...) => Route
to(TupleX(T1, T2, ...)) => Route
.