Many plug-ins in Xcode8 are no longer valid, but integrated into Xcode, such as comments, before Xcode8, the plug-in VVDocument was used, and the shortcut keys can be directly used in Xcode8, as follows:
1. Document annotation, the shortcut key is Command + Option + /,
you need to press Command + Option + / above the method name or in the blank space, the method is invalid inside
2, single-line comment, multi-line comment Command + /
