NullaryVoidDelegatFutureOr typedef
a typedef for an NullaryDelegateAsync that returns a Future<void>
Implementation
typedef NullaryVoidDelegatFutureOr = NullaryDelegateFutureOr<void>;
a typedef for an NullaryDelegateAsync that returns a Future<void>
typedef NullaryVoidDelegatFutureOr = NullaryDelegateFutureOr<void>;