Xcode Source Editor Extension: "Extension Marker"

An Xcode Source Editor Extension to add a MARK comment above any extension of a source file

Xcode Source Editor Extensions are located in Menu -> Editor. Select "Add Extensions Marks" to add a command above an extension in the source file you are currently working on.

Example

extension MyViewController: MyProtocol {

... will be modified to:

// MARK: - MyProtocol 

extension MyViewController: MyProtocol {