code: private static void processTaskFilter(ProjectFile project, Filter filter)
     {
        for (Task task : project.getTasks())
        {
           if (filter.evaluate(task, null))
           {
              System.out.println(task.getID() + "," + task.getUniqueID() + "," + task.getName());
           }
        }
     }
docs: Apply a filter to the list of all tasks, and show the results.
  
  @param project project file
  @param filter filter