scope test_structure_IPersistenceInfo set flag structure_debug. sclass #Blubb is IPersistenceInfo { S a = "aa", b = "bb"; public Map _persistenceInfo() { ret litmap("a", false); } } svoid test_structure_IPersistenceInfo() { S blubb = shortClassName(Blubb); // only b is serialized according to _persistenceInfo() assertEqualsVerbose(blubb + [[(b="bb")]], structure(new Blubb)); }