pub trait InputProxyInterface: Send + Sync {
type WatchResponseFut: Future<Output = Result<InputSettings, Error>> + Send;
type SetResponseFut: Future<Output = Result<InputSetResult, Error>> + Send;
// Required methods
fn watch(&self) -> Self::WatchResponseFut;
fn set(&self, input_states: &[InputState]) -> Self::SetResponseFut;
}