+* usefunction on methods
* extracted functions should be inserted before using class bodies
* temps might be read after body in usefunction or extract
-* using wild-cards for temps in extracted function pattern
* adding "referenced later" wildcard argument to restructurings?
* adding "change references" wildcard argument to restructurings?
-* restructurings and unsure occurrences
-* limiting the resources to apply a refactoring?
* adding custom wild-card replacements; needs use cases
* ideas for more custom wildcards
* adapting future python 2.6 ast changes