investigators.add(new ElementsCount(selector));
investigators.add(new MaxDegreeAttributes(selector));
investigators.add(new MaxDegreeContainments(selector));
investigators.add(new MaxDegreeReferences(selector));
investigators.add(new MaxDegreeReferencesWithoutContainments(selector));
investigators.add(new MaxInheritanceHeight(selector));
investigators.add(new MinDegreeAttributes(selector));
investigators.add(new MinDegreeContainments(selector));
investigators.add(new MinDegreeReferences(selector));
investigators.add(new MinDegreeReferencesWithoutContainments(selector));
investigators.add(new ReferencesCount(selector));