Unmarshaller unmarshaller = unmarshallerFactory.newUnmarshaller();
MutableSchemaResolver resolver = SingletonSchemaResolverFactory.getInstance().getSchemaBindingResolver();
resolver.mapLocationToClass("connector_1_6.xsd", JCA16MetaData.class);
resolver.mapLocationToClass("connector_1_5.xsd", JCA15MetaData.class);
resolver.mapLocationToClass("connector_1_5.dtd", JCA15DTDMetaData.class);
resolver.mapLocationToClass("connector_1_6.dtd", JCA16DTDMetaData.class);
resolver.mapLocationToClass("connector_1_0.dtd", JCA10DTDMetaData.class);
resolver.mapLocationToClass("connector", JCA16DefaultNSMetaData.class);
File metadataFile = new File(root, "/META-INF/ra.xml");