Github user asolimando commented on a diff in the pull request:
https://github.com/apache/spark/pull/20632#discussion_r168925247
--- Diff: mllib/src/main/scala/org/apache/spark/ml/tree/Node.scala ---
@@ -287,6 +292,41 @@ private[tree] class LearningNode(
}
}
+ /**
+ * Method testing whether a node is a leaf.
+ * @return true iff a node is a leaf.
--- End diff --
I have to admit that I have overdone it a bit with documentation here, I
have tried to reduce it all over the PR.
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