public void addDependencyTaskGroup ( TaskGroup dependencyTaskGroup ) { if ( dependencyTaskGroup . proxyTaskGroupWrapper . isActive ( ) ) { dependencyTaskGroup . proxyTaskGroupWrapper . addDependentTaskGroup ( this ) ; } else { DAGraph < TaskItem , TaskGroupEntry < TaskItem > > dependencyGraph = dependencyTaskGroup ; super . addDependencyGraph ( dependencyGraph ) ; } }
Mark root of this task task group depends on the given task group s root . This ensure this task group s root get picked for execution only after the completion of all tasks in the given group .