Map < String , CssProperty > getCssPropertiesAsMap ( final boolean rebuild ) { if ( rebuild || ! loadedOnce ) { synchronized ( cssProperties ) { if ( rebuild || ! loadedOnce ) { cssProperties . clear ( ) ; load ( cssProperties ) ; loadedOnce = true ; setModified ( true ) ; } } } return cssPropertiesAsMap ; }
rebuild true to rebuild the load method will be invoked again .