docs: @Override
      public String getOEMDomainName () throws SmbException {
          try ( SmbSessionImpl session = this.treeConnection.getSession();
                SmbTransportImpl transport = session.getTransport() ) {
              SmbNegotiationResponse nego = transport.getNegotiateResponse();
              if ( nego instanceof SmbComNegotiateResponse ) {
                  return ( (SmbComNegotiateResponse) nego ).getServerData().oemDomainName;
              }
              return null;
          }
      }