pub trait IndexerBuilder {
// Required method
fn build<'life0, 'async_trait>(
&'life0 self,
region_file_id: RegionFileId,
index_version: u64,
row_group_size: Option<usize>,
) -> Pin<Box<dyn Future<Output = Indexer> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
}