question: public static void restoreDefaultSetting ( String key ) { Object object = DEFAULT_MAP . get ( key ) ; if ( object != null ) { if ( object instanceof String ) { SIMBRAIN_PREFERENCES . put ( key , ( String ) object ) ; } else if ( object instanceof Double ) { SIMBRAIN_PREFERENCES . putDouble ( key , ( Double ) object ) ; } else if ( object instanceof Integer ) { SIMBRAIN_PREFERENCES . putInt ( key , ( Integer ) object ) ; } else if ( object instanceof Float ) { SIMBRAIN_PREFERENCES . putFloat ( key , ( Float ) object ) ; } } }
target:  Reverts a setting to its default value.