FunctionMultiReturn.polar2CartesianArray result set iteration throws ClassCastException #3406
Description
Running the above test results in ClassCastException:
Exception in thread "main" java.lang.ClassCastException: org.h2.jdbc.JdbcArray cannot be cast to [Ljava.lang.Object;
at org.h2.samples.FunctionMultiReturn.main(FunctionMultiReturn.java:72)