int number = bo.getInt(MongoDatabase.FLD_SERIESDEF_NUM);
boolean era = bo.getBoolean(MongoDatabase.FLD_SERIESDEF_ERASING);
SeriesDefinitionImpl def = null;
if (era) {
def = new SeriesDefinitionImpl(number, null, null);
def.edit();
def.setErasing(true);
} else {
String desc = bo.getString(MongoDatabase.FLD_SERIESDEF_DESC);
BasicDBList list = (BasicDBList)bo.get(MongoDatabase.FLD_SERIESDEF_ATTRIBS);
Collection<AttributeDefinition<?>> attribs = attributeDefinitions(schemaSurrogate, number, db, list);