java.lang.RuntimeException: __the_message__!
  at com.google.j2cl.junit.integration.stacktrace.data.package2.DuplicateFileName.throwException(DuplicateFileName.java:22)
  at com.google.j2cl.junit.integration.stacktrace.data.package1.DuplicateFileName.callFileWithDuplicateName(DuplicateFileName.java:22)
  at com.google.j2cl.junit.integration.stacktrace.data.DuplicateFileNameStacktraceTest.test(DuplicateFileNameStacktraceTest.java:28)
        __OPTIONAL__ # Testing infra on J2CL
