code: @Override
      public RoleSet getRolesForSpecialSubject(String appName, String specialSubject) {
          AuthzInfo authzInfo = resourceToAuthzInfoMap.get(appName);
          if (authzInfo != null) {
              Map<String, RoleSet> subjectToRolesMap = authzInfo.authzTableContainer.specialSubjectMap;
              if (subjectToRolesMap.get(specialSubject) == null) {
                  subjectToRolesMap = updateMapForSpecialSubject(appName, subjectToRolesMap, specialSubject);
              }
              return subjectToRolesMap.get(specialSubject);
          } else {
              return null;
          }
      }
docs: {@inheritDoc}