From 4b120c0813f4f86ee8382b192f8efdeaaac73b21 Mon Sep 17 00:00:00 2001
From: Lachlan Deakin <ljdgit@gmail.com>
Date: Mon, 23 Dec 2024 19:40:16 +1100
Subject: [PATCH] fix: seal `ArrayShardedReadableExt`

---
 zarrs/src/array/array_sync_sharded_readable_ext.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/zarrs/src/array/array_sync_sharded_readable_ext.rs b/zarrs/src/array/array_sync_sharded_readable_ext.rs
index cb97dafb..c18f02f0 100644
--- a/zarrs/src/array/array_sync_sharded_readable_ext.rs
+++ b/zarrs/src/array/array_sync_sharded_readable_ext.rs
@@ -88,7 +88,7 @@ impl ArrayShardedReadableExtCache {
 ///
 /// Sharding indexes are cached in a [`ArrayShardedReadableExtCache`] enabling faster retrieval.
 // TODO: Add default methods? Or change to options: Option<&CodecOptions>? Should really do this for array (breaking)...
-pub trait ArrayShardedReadableExt<TStorage: ?Sized + ReadableStorageTraits + 'static> {
+pub trait ArrayShardedReadableExt<TStorage: ?Sized + ReadableStorageTraits + 'static>: private::Sealed {
     /// Read and decode the inner chunk at `chunk_indices` into its bytes.
     ///
     /// See [`Array::retrieve_chunk_opt`].
@@ -472,6 +472,14 @@ impl<TStorage: ?Sized + ReadableStorageTraits + 'static> ArrayShardedReadableExt
     }
 }
 
+mod private {
+    use super::*;
+
+    pub trait Sealed {}
+
+    impl<TStorage: ?Sized + ReadableStorageTraits + 'static> Sealed for Array<TStorage> {}
+}
+
 #[cfg(test)]
 mod tests {
     use std::sync::Arc;