return savedKeys;
}
protected <T> Key<T> save(final DBCollection dbColl, final T entity, final WriteConcern wc) {
if (entity == null) {
throw new UpdateException("Can not persist a null entity");
}
final MappedClass mc = mapper.getMappedClass(entity);
if (mc.getAnnotation(NotSaved.class) != null) {
throw new MappingException(