public final < U4 > Tuple4 < T1 , T2 , T3 , U4 > map4 ( Function < ? super T4 , ? extends U4 > function ) { return Tuple . tuple ( v1 , v2 , v3 , function . apply ( v4 ) ) ; }
Apply attribute 4 as argument to a function and return a new tuple with the substituted argument .