title: How to handle subflows
body: <p>Can we use somehow "subflows" in Spring Integration?</p>
  
  <p>I have many different processes which would use the same "subflow".  These processes have always the same part which would be good to be put into a separate file.</p>
  
  <p>What would be the corrent way to implement these flows?</p>
  
  <p>I tried to find a solution to use subflows in Spring Integration but I could not find anything.</p>