code: protected Message createControlMessage(TestContext context, String messageType) {
          if (dataDictionary != null) {
              messageBuilder.setDataDictionary(dataDictionary);
          }
  
          return messageBuilder.buildMessageContent(context, messageType, MessageDirection.INBOUND);
      }
docs: Create control message that is expected.
  @param context
  @param messageType
  @return