title: How do I navigate through a method call hierarchy in Xcode 4?
body: <p>I come from Eclipse, I would like to know if there is a way in Xcode 4 to navigate through method calls like there.
  I know I can jump to the definition of a method, but I want to know who is calling that method/function.
  The only way I've found is doing a regular text search, but that's not very helpful.</p>