Function4<T1, T2, T3, T4, R> typedef Null safety

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,
);