new BasicDBObject(field.toString(), index.value().toIndexValue()),
index.unique(),
index.dropDups(),
index.background() ? index.background() : background,
index.sparse(),
index.expireAfterSeconds());
}
if (!mf.isTypeMongoCompatible() && !mf.hasAnnotation(Reference.class) && !mf.hasAnnotation(Serialized.class)
&& !mf.hasAnnotation(NotSaved.class) && !mf.hasAnnotation(Transient.class)) {
final List<MappedClass> newParentClasses = new ArrayList<MappedClass>(parentMCs);