T5 Module methods call

I have my own service module class under my services sub package to set up
my application configuration. There is one method to set up application
defaults, it is called corrected,

public void contributeApplicationDefaults(MappedConfiguration<String,
String> configuration){
        configuration.add(SymbolConstants.PRODUCTION_MODE, "false");
        configuration.add("tapestry.page-pool.active-window", "100 m");
        configuration.add("tapestry.page-pool.hard-limit", "30");
        //configuration.add("tapestry.exception-report-page",
"MyErrorPage");
        configuration.add("tapestry.file-check-interval", "10s");

        //customized symbol
        configuration.add("web.root", "/salesTrack/");
        System.out.println("change application default>>>>>>>>>>>>>>>>>>");
    }

but this one is not called:
 public static void contributeIgnoredPathsFilter(Configuration<String>
configuration)
      {
        configuration.add("/dwr/.*");
        configuration.add("/scripts/.*");
        configuration.add("/logout");

      }
Why?

--
Haipeng Du
Salt Lake City