* Hey all! Could use some input here.

I've got a crate to build AT commands. Since a while it has support for optional parameters.
An optional parameter looks like this:

```
AT+FOO=1,2, ,4
           ^
```

See how the parameter is still there with a comma but the field is empty?

This is done with the function `.with_optional_int_parameter(None)`.

Now, I just got an opened issue where someone requests optional parameters that don't leave behind a comma.
It'd look like this:

```
AT+FOO=1,2,4
```

What name for an API function can you come up with that distinguishes this behavior from the existing optional parameter?
I'm open to renaming the original API too if there's a good naming scheme.

So I hope someone here has a suggestion!