title: How do you add some steps to a capistrano task?
body: <p>I'd like to stop some processes before running the deploy:migrate task.  I know that I can redefine the deploy:migrate task by copying the existing code and adding the stop/start steps at the beginning and end of the task.  </p>
  
  <p>I'm wondering if there is a way to avoid copying the code from the default deploy:migrate task in my version of the task.  Is there a way to refer to the existing deploy:migrate task when defining a new task of the same name?  </p>