pub trait GetBatchFileContent: Send + Sync {
type Error;
// Required method
fn file_content<'life0, 'life1, 'async_trait>(
&'life0 self,
file_id: &'life1 str,
) -> Pin<Box<dyn Future<Output = Result<Bytes, Self::Error>> + Send + 'async_trait>>
where 'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait;
}