NextPageKeyCallback<PageKeyType, ItemType> typedef

NextPageKeyCallback<PageKeyType, ItemType> = PageKeyType? Function(PagingState<PageKeyType, ItemType> state)

A callback to get the next page key. If this function returns null, it indicates that there are no more pages to load.

Implementation

typedef NextPageKeyCallback<PageKeyType, ItemType> = PageKeyType? Function(
    PagingState<PageKeyType, ItemType> state);