question: public static void addDefaultResource ( String name ) { ArrayList < Configuration > toReload ; synchronized ( Configuration . class ) { if ( defaultResources . contains ( name ) ) { return ; } defaultResources . add ( name ) ; toReload = new ArrayList < > ( REGISTRY . size ( ) ) ; toReload . addAll ( REGISTRY . keySet ( ) ) ; } for ( Configuration conf : toReload ) { if ( conf . loadDefaults ) { conf . reloadConfiguration ( ) ; } } }
target:  Add a default resource. Resources are loaded in the order of the resources added.