Cleaning output files:
out/production/module/test/TestPackage$fun$*.class
out/production/module/test/TestPackage.class
End of files
Compiling files:
src/fun.kt
End of files
Cleaning output files:
out/production/module/WillBeUnresolved.class
End of files
Compiling files:
src/WillBeUnresolved.java
End of files
COMPILATION FAILED
cannot find symbol
symbol  : method f(java.lang.String)
location: class test.TestPackage