investigators.add(new ReferencesWithoutContainmentsCycles(selector));
investigators.add(new ReferencesWithoutContainmentsDiameter(selector));
investigators.add(new ReferencesWithoutContainmentsRadius(selector));
investigators.add(new ReferencesWithoutContainmentsSum(selector));
investigators.add(new RootContainmentsHeight(selector));
investigators.add(new SupertypesCount(selector));
return investigators;
}