How know Who Is calling sub or function

[Sascha_S]

@jury_buono1

what I don’t like about generating an error and querying the stack to understand who the caller is is precisely the issue of generating an error, which I don’t think is the best for the speed of execution of the code.

That’s true if this information were needed every time a method is called.
If that’s actually the case, then I would, like @Tim_Parnell, suspect that your solution is suboptimal. There must be another, better way. But until we learn more about why your solution should look the way you want it to, we can only help suboptimally.