Xcode key bindings: how to create a custom shortcut to convert upper case text to lower case and viceversa

Since one of the most visited post on my blog is that one about case conversion in Eclipse, I decided to share how to implement 2 custom shortcuts to do the same in Xcode.
In “Preferences” panel, there is a tab called “Key Bindings“, here we can configure keys used for shortcuts. By default the most are already configured, but that’s not the case for text case conversion. By typing “case” to filter the long list, you can see 2 commands: “Lowercase word” and “Uppercase word“, all you have to do is to click on the “key” column and register your shortcut.
To avoid conflicts and to make them simple to remember I did choose “SHIFT + CTRL + L” for the first and “SHIFT + CTRL + U” for the second (but you can register your own one).