alias_method_chain
って良くないよねー
* alias_method_chain preserves method punctuation so foo, foo?, and foo! may be chained with the same feature. [Jeremy Kemper] Example: alias_method_chain :save!, :validation is equivalent to alias_method :save_without_validation!, :save! alias_method :save!, :save_with_validation!
without 絡めて grep っても全然出てこないんだもん。