alamb commented on code in PR #9092:
URL: https://github.com/apache/arrow-rs/pull/9092#discussion_r2658865711


##########
arrow-array/src/array/mod.rs:
##########
@@ -78,8 +78,14 @@ pub use list_view_array::*;
 
 use crate::iterator::ArrayIter;
 
+mod private {
+    pub trait Sealed {}

Review Comment:
   I think some context here would help -- perhaps something like
   
   ```suggestion
       /// Private marker trait to ensure [`Array`] can not be implemented 
outside this crate
       pub trait Sealed {}
   ```



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