After you apply a pattern, you
can add to, remove, or replace any of the bound arguments in the pattern
instance until you have the results you want in your design model.
You can also modify the bound argument elements. If necessary, you
can reapply or remove the pattern.
About this task
Each pattern is unique. Pattern authors supply
the code for the methods that are invoked when a change occurs to
an argument. Thus, the results of unbinding and replacing arguments
varies according to pattern design.