"Reserved prefixes" rule

Summary of the new feature

A while ago, the PowerShell extension had an issue open on it because

Get-Help Get-AdUser -Online

and

Get-Help Get-AdFoo -Online

(note, Foo is used to make it obvious and I forget what the actual noun was)

Were not giving the same result...

As it turned out, its because Get-AdFoo was from a module from the Gallery... Where Get-AdUser comes from the inbox Active Directory module.

Personally, I think it's quite dodgy to overload such a crucial prefix like Ad and we should warn users that certain prefixes are used already in very critical modules.

Proposed technical implementation details (optional)

A rule that gives a warning that says "you probably shouldn't use this prefix because it's already used by X"

Or something to that effect.

What is the latest version of PSScriptAnalyzer at the point of writing

1.18.0

Non sono stati identificati file di implementazione né test. Inizia individuando i punti di ingresso esistenti delle regole di PSScriptAnalyzer ed esaminando come vengono rappresentati i nomi dei comandi e i moduli PowerShell; poi chiarisci l’origine del prefisso riservato, il comportamento degli avvisi e i criteri di accettazione prima di implementare o testare la regola.