static final synchronized MyRelation assertRelation(CallingContext cc)
throws ODKDatastoreException {
MyRelation relationPrototype;
Datastore ds = cc.getDatastore();
User user = cc.getUserService().getDaemonAccountUser();
relationPrototype = new MyRelation(ds.getDefaultSchemaName());
ds.assertRelation(relationPrototype, user); // may throw exception...
// at this point, the prototype has become fully populated
return relationPrototype; // set static variable only upon success...
}
