pub trait MouseSourceProxyInterface: Send + Sync {
    type WatchResponseFut: Future<Output = Result<Vec<MouseEvent>, Error>> + Send;
    // Required method
    fn watch(&self) -> Self::WatchResponseFut;
}pub trait MouseSourceProxyInterface: Send + Sync {
    type WatchResponseFut: Future<Output = Result<Vec<MouseEvent>, Error>> + Send;
    // Required method
    fn watch(&self) -> Self::WatchResponseFut;
}