question: public void importFromChange ( Change sourceChange ) { if ( sourceChange . revision ( ) > 0 ) { this . revisionId = new NumericLiteralImpl ( sourceChange . revision ( ) ) ; } if ( sourceChange . timestamp ( ) != null ) { Date date = sourceChange . timestamp ( ) ; Calendar c = Calendar . getInstance ( TimeZone . getTimeZone ( "UTC" ) , Locale . ROOT ) ; c . setTime ( date ) ; this . lastModified = new LiteralImpl ( DatatypeConverter . printDate ( c ) , XMLSchema . DATETIME ) ; } }
target:  Import revision data from Change object.