code: public void marshall(ListedServer listedServer, ProtocolMarshaller protocolMarshaller) {
  
          if (listedServer == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(listedServer.getArn(), ARN_BINDING);
              protocolMarshaller.marshall(listedServer.getIdentityProviderType(), IDENTITYPROVIDERTYPE_BINDING);
              protocolMarshaller.marshall(listedServer.getEndpointType(), ENDPOINTTYPE_BINDING);
              protocolMarshaller.marshall(listedServer.getLoggingRole(), LOGGINGROLE_BINDING);
              protocolMarshaller.marshall(listedServer.getServerId(), SERVERID_BINDING);
              protocolMarshaller.marshall(listedServer.getState(), STATE_BINDING);
              protocolMarshaller.marshall(listedServer.getUserCount(), USERCOUNT_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.