public final ReadOnlyObjectProperty < ZoneId > zoneIdProperty ( ) { if ( zoneId == null ) { zoneId = new ReadOnlyObjectWrapper <> ( this , "zoneId" , getInterval ( ) . getZoneId ( ) ) ; //$NON-NLS-1$ } return zoneId . getReadOnlyProperty ( ) ; }
A property used to store a time zone for the entry . The time zone is needed for properly interpreting the dates and times of the entry .