code: private static void displayAvailableFilters(ProjectFile project)
     {
        System.out.println("Unknown filter name supplied.");
        System.out.println("Available task filters:");
        for (Filter filter : project.getFilters().getTaskFilters())
        {
           System.out.println("   " + filter.getName());
        }
  
        System.out.println("Available resource filters:");
        for (Filter filter : project.getFilters().getResourceFilters())
        {
           System.out.println("   " + filter.getName());
        }
  
     }
docs: This utility displays a list of available task filters, and a
  list of available resource filters.
  
  @param project project file