[webMethods] How to invoke a Flow Service from a Java Service

Problem
如何在 Java Service 中，呼叫一個 Flow Service？

How-To
按照不同的情境 (synchronous 或 asynchronous)，與有參數或無參數，需呼叫不同的 API，JavaDoc 如下:
JavaDoc for asynchronous

JavaDoc for synchronous

Examples:
1. Asynchronous and DO NOT have input parameter

    Session session = Service.getSession(); 
    Service.doThreadInvoke("test.work", "Test_Flow", session, IDataFactory.create());

2. Asynchronous and HAVE input parameter (s)

    Session session = Service.getSession(); 
    
    IData input = IDataFactory.create();
        
    IDataCursor inputCursor = input.getCursor();
    IDataUtil.put(inputCursor, "input", " test test ");
    inputCursor.destroy();
    
    Service.doThreadInvoke("test.work", "Test_Flow", session, input);

3. Synchronous and DO NOT have input parameter

    Service.doInvoke("test.work", "Test_Flow", IDataFactory.create());

4. Synchronous and HAVE input parameter (s)

    IData input = IDataFactory.create();
        
    IDataCursor inputCursor = input.getCursor();
    IDataUtil.put(inputCursor, "input", " test test ");
    inputCursor.destroy();
    
    Service.doInvoke("test.work", "Test_Flow", input);