I have created a platformjs custom element that extends form, lets call it x-form. I've wrapped x-form inside of a polymer element named super-form. I'm doing this because I want to keep the encapsulation of the javascript and css to this single element. What I'd like to know is, is there a way to register the x-form to the shadow dom of super-form or otherwise restrict the use of x-form outside of the super-form element?
