return rel != null && !rel.virtual ? rel.other : properties;
if (rel != null) {  if (rel.virtual && rel.prototype == null) return null; else return rel.other; } return properties;
    public DbMapping getPropertyMapping (String propname) {	if (propname == null)	    return properties;	Relation rel = (Relation) prop2db.get (propname.toLowerCase());	return rel != null && !rel.virtual ? rel.other : properties;    }