pub trait ConfigurationProxyInterface: Send + Sync {
    type UpdateResponseFut: Future<Output = Result<Settings, Error>> + Send;
    // Required method
    fn update(&self, settings: &Settings) -> Self::UpdateResponseFut;
}pub trait ConfigurationProxyInterface: Send + Sync {
    type UpdateResponseFut: Future<Output = Result<Settings, Error>> + Send;
    // Required method
    fn update(&self, settings: &Settings) -> Self::UpdateResponseFut;
}