xs.alias("database", org.geoserver.importer.Database.class);
xs.alias("table", Table.class);
xs.omitField(Table.class, "db");
xs.alias("vectorTransformChain", VectorTransformChain.class);
xs.registerLocalConverter(ReprojectTransform.class, "source", new CRSConverter());
xs.registerLocalConverter(ReprojectTransform.class, "target", new CRSConverter());
xs.registerLocalConverter( ReferencedEnvelope.class, "crs", new CRSConverter() );
xs.registerLocalConverter( GeneralEnvelope.class, "crs", new CRSConverter() );
return xp;
}