pub trait DingtalkResource {
type T;
// Required method
fn fetch<'life0, 'life1, 'async_trait>(
&'life0 self,
dingtalk: &'life1 DingTalkStream,
save_to: PathBuf,
) -> Pin<Box<dyn Future<Output = Result<(PathBuf, Self::T)>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait;
}