code: function (isRelevantTagAttr, usid, root, parseDynamicRoutes) {
      this.currentDirective = null;
      this.matches = [];
      this.isRelevantTagAttr = isRelevantTagAttr;
      this.usid = usid;
      this.ident = function () {
          return "____" + usid + Math.random() + "____";
      };
      this.data = {};
      this.root = root;
      this.parseDynamicRoutes = parseDynamicRoutes;
  }
docs: AttributeContext class