Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/15513#discussion_r84590609 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/CallMethodViaReflection.scala --- @@ -43,11 +43,20 @@ import org.apache.spark.util.Utils * and the second element should be a literal string for the method name, * and the remaining are input arguments to the Java method. */ -// scalastyle:off line.size.limit @ExpressionDescription( - usage = "_FUNC_(class,method[,arg1[,arg2..]]) calls method with reflection", - extended = "> SELECT _FUNC_('java.util.UUID', 'randomUUID');\n c33fb387-8500-4bfa-81d2-6e0e3e930df2") -// scalastyle:on line.size.limit + usage = "_FUNC_(class, method[, arg1[, arg2 ..]]) - Calls method with reflection.", + extended = """ + Arguments: + class - a string literal that represents a fully-qualified class name. + method - a string literal that represents a method name. + arg - a string literal that represents arguments for the method. --- End diff -- Oh, it seems `arg` is not. Let me try to fine such cases here.
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