pub trait RebindParentProxyInterface: Send + Sync {
type AddChildResponseFut: Future<Output = Result<RebindParentAddChildResult, Error>> + Send;
type RemoveChildResponseFut: Future<Output = Result<RebindParentRemoveChildResult, Error>> + Send;
// Required methods
fn add_child(&self) -> Self::AddChildResponseFut;
fn remove_child(&self) -> Self::RemoveChildResponseFut;
}