Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/17040
I guess this is meant to be internal API -
https://github.com/apache/spark/blob/f041e55eefe1d8a995fed321c66bccbd8b8e5255/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/package.scala#L21-L22
Could you maybe open a JIRA and describe usecase to persuade make this a
proper external API maybe?
Also, it'd be great if this PR follows
http://spark.apache.org/contributing.html (e.g., [SPARK-XXXX] in the PR title
with a JIRA).
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