Github user smurakozi commented on a diff in the pull request: https://github.com/apache/spark/pull/19599#discussion_r156086625 --- Diff: mllib/src/main/scala/org/apache/spark/ml/param/params.scala --- @@ -435,6 +435,43 @@ class BooleanParam(parent: String, name: String, doc: String) // No need for isV } } +/** + * :: DeveloperApi :: + * Specialized version of `Param[String]` for Java. + */ +@DeveloperApi +class StringParam(parent: Params, name: String, doc: String, isValid: String => Boolean) + extends Param[String](parent, name, doc, isValid) { + + private var options: Option[Array[String]] = None --- End diff -- It should rather be a val. That way you would not need def getOptions()
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