<auto-generated stub>
def _1(): Rep[A]
def _2(): Rep[B]
def _3(): Rep[C]
def toString(): Rep[String]
def pack(t: Tuple3[Rep[A],Rep[B],Rep[C]]): Rep[Tup3[A,B,C]]
def unpack(t: Rep[Tup3[A,B,C]]): Tuple3[Rep[A],Rep[B],Rep[C]]