I am confused by the stubtest failure, which I have reproduced locally

note: unused allowlist entry matplotlib.image._ImageBase.draw

_imageBase.draw is not in the allowlist. The only draw in there is Axis.draw, which this PR also modifies, but removing that line from the allowlist does not get rid of the error.

Had a bit of a dig, and that's because stubtest.py sneakily adds anything that is decorated
with "delete_parameter" to another allowlist (self.output is an allowlist file):

I'm not sure why the purpose of this is, and why it's not playing ball with matplotlib.image._ImageBase.draw though...

Ahh... when used for non-*args/**kwargs, delete_parameter adds a sentinel default value which breaks typing, so rather than specifically enumerating and causing the list of exceptions to have to be updated (or the type hints to have to be updated leaking private internal sentinel values...) I just automatically detected when it was used.

However, for variadic args no such sentinel is used, so it doesn't actually break so the entry is unused.

Pushed an update to the automatic detection code to parse out when a vararg/kwarg is delete_parameter'd instead of just always adding it. Basically just unwinds the for loop from the any clause and adds some checks where it will continue before adding the exception (and a break to avoid adding the same exception twice, which I don't think would be a problem but might as well)

Also added a comment that at least indicates the reason it is there/what is happening.

Thanks @ksunden!