Use staticmethod or module function when instance isn't referenced.

[JustinTArthur]

I used staticmethods where I thought the taxonomy or overridability might be useful, or I didn't know.

[Martiusweb]

Hi,

Do you have a use case where overriding those functions is useful?
Imho, since those functions and methods are private, and unless there is a good use case inside the codebase of asyncio, we shouldn't encourage someone to override them.

[gvanrossum]

This looks like a refactoring that accomplishes nothing except code churn. Let's not do this.