question: public static boolean restore ( ) { File restoreConfig = new File ( RESTORATION_PROPERTIES ) ; if ( restoreConfig . exists ( ) && restoreConfig . isFile ( ) ) { logger . info ( "Performing restoration DHuS system..." ) ; try ( FileInputStream stream = new FileInputStream ( restoreConfig ) ) { Properties properties = new Properties ( ) ; properties . load ( stream ) ; restoreDatabase ( properties ) ; restoreSolrIndex ( properties ) ; } catch ( UnsupportedOperationException e ) { logger . error ( "Incomplete DHuS restoration file." , e ) ; System . setProperty ( "Archive.check" , "true" ) ; } catch ( Exception e ) { logger . fatal ( "Restoration failure." , e ) ; return false ; } finally { restoreConfig . delete ( ) ; } } return true ; }
target:  Restores DHuS in a previous state.