question: private void restoreData ( ) { Map < String , ? > map = preferenceUtils . getAll ( ) ; Set < String > strings = map . keySet ( ) ; for ( String string : strings ) { if ( string . startsWith ( SharedPreferenceUtils . keyTestMode ) ) { preferenceUtils . restoreKey ( string ) ; } } refreshKeyValues ( ) ; }
target:  Restore values of original keys stored.