Access the Pins by Index

The documentation give a rather good overview of how to access pins using a pin's name. What I could not find though was how to access a pin by index. I would like to avoid matching like this:

```rust
match pin {
    0=>pins.gpio0.into_mode(),
    1=>pins.gpio1.into_mode(),
    2=>pins.gpio2.into_mode(),
    ...
```
Would that be possible to do?