MOD: Change get_range_to_file to concrete return

Author: threecgreen

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## 0.30.1 - TBD
 
+### Enhancements
+- Changed `timeseries.get_range_to_file()` to return a concrete type instead of an impl
+  trait type
+
 ### Bug fixes
 - Removed unused `S3` and `Disk` variants from `Delivery` enum
 

src/historical/timeseries.rs

@@ -2,6 +2,7 @@
 
 use std::{num::NonZeroU64, path::PathBuf};
 
+use async_compression::tokio::bufread::ZstdDecoder;
 use dbn::{
     decode::DbnMetadata,
     encode::{AsyncDbnEncoder, AsyncEncodeRecordRef},
@@ -78,7 +79,7 @@ impl TimeseriesClient<'_> {
     pub async fn get_range_to_file(
         &mut self,
         params: &GetRangeToFileParams,
-    ) -> crate::Result<AsyncDbnDecoder<impl AsyncReadExt>> {
+    ) -> crate::Result<AsyncDbnDecoder<ZstdDecoder<BufReader<File>>>> {
         let reader = self
             .get_range_impl(
                 &params.dataset,