PowerShell One-Liner: What's the Function Name?

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Rather than have to put the function's name in the error mesage (and then forgetting to change it when I copy/paste/rename/modify it), here's a quick function that I can embed in the error message to spit out the function's name:

 function Get-FunctionName {
(Get-Variable MyInvocation -Scope 1).Value.MyCommand.Name;
}

-scope 1 means to get it for the calling function, which is what we need.