threshold abstract method

Implementation

TRes threshold(
    Iterable<Query$getQuestActivitiesByQuest$getQuestActivitiesByQuest$activity$action$definition$game$sliding$threshold>? Function(
            Iterable<
                CopyWith$Query$getQuestActivitiesByQuest$getQuestActivitiesByQuest$activity$action$definition$game$sliding$threshold<
                    Query$getQuestActivitiesByQuest$getQuestActivitiesByQuest$activity$action$definition$game$sliding$threshold>>?)
        _fn);