Just a reminder for myself. How to fold and unfold code in XCode:
- ⌘ + ⌥ + ⇧ + ← fold all methods in file.
 - ⌘ + ⌥ + ⇧ + → unfold all methods in file.
 - ⌘ + ⌥ + ← fold block underneath the cursor.
 - ⌘ + ⌥ + → unfold block underneath the cursor.
 
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