docs: public static boolean isAdmin(IGroupMember member) {
          IEntityGroup adminGroup = null;
  
          try {
              adminGroup =
                      GroupService.getDistinguishedGroup(PORTAL_ADMINISTRATORS_DISTINGUISHED_GROUP);
          } catch (GroupsException ge) {
              // cannot determine whether or not the user is an admin.
              cLog.error(
                      "Administrative group not found, cannot determine "
                              + "user's admininstrative membership.",
                      ge);
          }
  
          return (null != adminGroup && adminGroup.deepContains(member));
      }