viirya commented on code in PR #3155:
URL: https://github.com/apache/arrow-rs/pull/3155#discussion_r1031329561
##########
arrow-array/src/builder/map_builder.rs:
##########
@@ -32,10 +59,14 @@ pub struct MapBuilder<K: ArrayBuilder, V: ArrayBuilder> {
value_builder: V,
}
+/// Contains details of the mapping
#[derive(Debug, Clone)]
pub struct MapFieldNames {
+ /// [`Field`] name for map
Review Comment:
```suggestion
/// [`Field`] name for map entries
```
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