title: Method swizzling a private framework iOS API
body: <p>I know there are countless resources on method swizzling. However is it possible to swizzle a method from a private API? The problem is that there are no header files. I would like to swizzle a method from a private class in a PrivateFramework such as (random example) Message.framework methods</p>
  
  <p>This is for personal testing, I understand that it will get rejected to oblivion by Apple.</p>