Action3<T1, T2, T3> typedef Null safety

Action3<T1, T2, T3> = FutureOr<void> Function(T1 arg1, T2 arg2, T3 arg3)

Implementation

typedef Action3<T1, T2, T3> = FutureOr<void> Function(
    T1 arg1, T2 arg2, T3 arg3);