inputChannel = splitter.getIOField("input", 0);
inputChannel = splitter.getIOField("inputChannel", 0);
    public void connectGraph()    {        // setup all children of this splitjoin        {            ListIterator iter;            iter = childrenStreams.listIterator();            while (iter.hasNext())                {                    Stream s = (Stream) iter.next();                    assert s != null;                    s.setupOperator();                }        }        // connect the SplitJoin with the Split and the Join        if (splitter != null)            {                splitter.setupOperator();                inputChannel = splitter.getIOField("input", 0);            }        if (joiner != null)            {                joiner.setupOperator();                outputChannel = joiner.getIOField("output", 0);            }    }