continued abstract method

void continued(
  1. dynamic continuationFirst(
    1. First
    ),
  2. dynamic continuationSecond(
    1. Second
    ),
  3. dynamic continuationThird(
    1. Third
    )
)

Implementation

void continued(
  Function(First) continuationFirst,
  Function(Second) continuationSecond,
  Function(Third) continuationThird,
);