docs: public static IGroupMember getGroupMember(String key, Class<?> type) throws GroupsException {
          /*
           * WARNING:  The 'type' parameter is not the leafType;  you're obligated
           * to say whether you want a group or a non-group (i.e. some type of
           * entity).  In fact, the underlying implementation blindly instantiates
           * whatever you tell it to.
           */
  
          LOGGER.trace("Invoking getEntity for key='{}', type='{}'", key, type);
          return instance().igetGroupMember(key, type);
      }