docs: public MucConfigFormManager setRoomOwners(Collection<? extends Jid> newOwners) throws MucConfigurationNotSupportedException {
          if (!supportsRoomOwners()) {
              throw new MucConfigurationNotSupportedException(MUC_ROOMCONFIG_ROOMOWNERS);
          }
          owners.clear();
          owners.addAll(newOwners);
          return this;
      }