Function4<T1, T2, T3, T4, R> typedef
Function4<T1, T2, T3, T4, R> =
FutureOr<R> Function(T1 arg1, T2 arg2, T3 arg3, T4 arg4)
Implementation
typedef Function4<T1, T2, T3, T4, R> = FutureOr<R> Function(
T1 arg1,
T2 arg2,
T3 arg3,
T4 arg4,
);