@Override
            public ExtendedPluginDescriptor build() {
                return new ExtendedPluginDescriptor(this);
            }
        }
    }

    @Test
    void testExtendedPluginDescriptor() {
        ExtendedPluginDescriptor.Builder builder = new ExtendedPluginDescriptor.Builder();
        // make sure to call the subclasses' builder methods first, otherwise fluent API would not work