Function try_read_bloom_meta 

async fn try_read_bloom_meta(
    reader: &<FsPuffinManager<Arc<BoundedStager<RegionIndexId>>, ObjectStorePuffinFileAccessor> as PuffinManager>::Reader,
    region_index_id: RegionIndexId,
    blob_type: &str,
    target_key: &str,
    cache: Option<&Arc<IndexCache<(FileId, IndexVersion, ColumnId, Tag), BloomFilterMeta>>>,
    tag: Tag,
    context: &IndexEntryContext<'_>,
) -> Option<BloomFilterMeta>