static _getRootPath(view) {

    if (view instanceof ViewAbstraction) {

      return view.configTRef;

    }

    if (view instanceof $tw.Tiddler) { // is a tiddler object

      view  = view.fields.title;

    }

    if (typeof view === 'string') {

      // remove prefix and slash
      const label = utils.getWithoutPrefix(view, `${$tm.path.views}/`);

      // a valid label must not contain any slashes
      if (label && !utils.hasSubString(label, '/')) {

        return `${$tm.path.views}/${label}`;

      }
    }

  }
Will return the path to the config tiddler of this view, aka the view's root.

@private

@param {*} view - The constructor param to abstract or create the view.
@result {string|undefined} The view config path.