Help getting username

[Cantor, Scott]

You're violating a call signature here and passing a function into a function that takes a ProfileRequestContext as input, which is what it's telling you.

Without any, umm, context, for what you're doing here, I don't know that this is even the proper function to be using.

There is no "username" in Shibboleth, not in the SP and not in the IdP. Identity is more complex than that, and there is only ever a "single" value for this concept when your'e talking about the result of subject canonicalization after authentication is done. After that point, the "final" value is in the SubjectContext.

Anything before that is "it depends on a lot of factors".

-- Scott