cloud-fan commented on code in PR #51002:
URL: https://github.com/apache/spark/pull/51002#discussion_r2106688562
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sql/api/src/main/scala/org/apache/spark/sql/types/Metadata.scala:
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@@ -120,6 +122,12 @@ sealed class Metadata private[types] (private[types] val
map: Map[String, Any])
map(key).asInstanceOf[T]
}
+ private[sql] def getExpression[E](key: String): (String, Option[E]) = {
Review Comment:
```suggestion
private[sql] def getExpression[E <: Expression](key: String): (String,
Option[E]) = {
```
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