refactoring to patterns, p. 346

1. extract local variable on the variable that should be a parameter
2. move the variable initialization to the start of the method
3. extract a method on the rest of the method (all but the variable initialization) with the same name as the old method
4. inline the old method

I think the mechanics in RtP are better, because only two steps are required. What I like about the sequence here is that it visualizes how the code moves.