// Start with null context version.
final VersionCompatibilityTargetService rootContextVersionService = root.service( VersionCompatibilityTargetService.class );
assertNotNull( rootContextVersionService );
assertNull( rootContextVersionService.version() );
assertVersionCompatibility( root, RootElement.PROP_VALUE_SINCE, false );
assertVersionCompatibility( root, RootElement.PROP_VALUE_SINCE_DYNAMIC, false );
assertVersionCompatibility( root, RootElement.PROP_VALUE_VERSION_COMPATIBILITY, false );
assertVersionCompatibility( root, RootElement.PROP_VALUE_VERSION_COMPATIBILITY_DYNAMIC, false );