--- old/src/jdk.jpackage/share/classes/jdk/jpackage/internal/Bundler.java	2019-09-06 15:54:35.894652300 -0400
+++ new/src/jdk.jpackage/share/classes/jdk/jpackage/internal/Bundler.java	2019-09-06 15:54:33.647993100 -0400
@@ -117,4 +117,9 @@
      * Returns "true" if this bundler is supported on current platform.
      */
     public boolean supported(boolean runtimeInstaller);
+
+    /**
+     * Returns "true" if this bundler is he default for the current platform.
+     */
+    public boolean isDefault();
 }