No way to create a BenchmarkId with a function but without a parameter

[CraftSpider]

The problem:

Currently, there exists new to create from a function name and parameter, and from_parameter for creating just from a parameter. IntoBenchmarkId lets strings become a BenchmarkId with just a function name, yet it isn't publicly exported.

Why is this needed:

Some methods, such as bench_with_input on Criterion, take a BenchmarkId instead of any IntoBenchmarkId. This could be changed to take a generic, but I think even if that happens it makes sense to add this functionality anyways.

Desired solution:

A from_function or similar function to create a BenchmarkId with just a function name

[CraftSpider]

I just realized that bench_with_input internally unwraps parameter - so this wouldn't work nicely with how the library treats benchmark IDs. I guess this may just be me using the library not how it was expected, is there a 'proper' way to provide the bench of a function with a parameter when you're just using it as a way to automatically black-box the parameter (such as to provide a &self to every call)?