diff -r 88453b906981 -r 7a61351edad2 test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java	Tue Sep 24 13:50:40 2019 -0400
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java	Tue Sep 24 13:57:28 2019 -0400
@@ -473,11 +473,11 @@
                 .getPrintableCommandLine();
     }
 
-    void verifyIsOfType(Collection<PackageType> types) {
+    public void verifyIsOfType(Collection<PackageType> types) {
         verifyIsOfType(types.toArray(PackageType[]::new));
     }
 
-    void verifyIsOfType(PackageType ... types) {
+    public void verifyIsOfType(PackageType ... types) {
         if (!Arrays.asList(types).contains(packageType())) {
             throw new IllegalArgumentException("Unexpected package type");
         }