[TheCleric]

As an addendum if the function only needs the keys I would possibly just have the parameter be a string[] that expected the user to call object.Keys to pass to.

That way the function isn't asking for parameters it doesn't really care about.

Though I do get the appeal of having the function call object.Keys if it's called frequently so as not to have to sprinkle that call everywhere.

[eyelidlessness]

Yeah unfortunately it’s ergonomically A Thing to just accept object as input even if you only care about keys. Otherwise I’d have the exact signature you describe.