Utilities >> startUp registration??

> does anybody know if this is of any use?
>
>
> startUp
>        SystemChangeNotifier uniqueInstance notify: self ofAllSystemChangesUsing: #event:.
>
>
> event: anEvent
>        "Hook for SystemChangeNotifier"
>
>        (anEvent isCommented and: [anEvent itemKind = SystemChangeNotifier classKind])
>                ifTrue: [self noteMethodSubmission: #Comment forClass: anEvent item].
>        ((anEvent isAdded or: [anEvent isModified]) and: [anEvent itemKind = SystemChangeNotifier methodKind])
>                ifTrue: [anEvent itemRequestor ifNotNil: [self noteMethodSubmission: anEvent itemSelector forClass: anEvent itemClass]].
>        ((anEvent isAdded or: [anEvent isModified]) and: [anEvent itemKind = SystemChangeNotifier methodKind]) ifTrue:[
>                InMidstOfFileinNotification signal
>                        ifFalse: [Utilities changed: #recentMethodSubmissions].
>        ].
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