src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacDmgBundler.java

@@ -464,6 +464,12 @@
             return true;
         } catch (Exception e) {
             return false;
         }
     }
+
+    @Override
+    public boolean isDefault() {
+        return true;
+    }
+
 }