code: function(state) {
        var params = state.url && state.url.params || new $$UMFP.ParamSet();
        forEach(state.params || {}, function(config, id) {
          if (!params[id]) params[id] = new $$UMFP.Param(id, null, config, "config");
        });
        return params;
      }
docs: Own parameters for this state. state.url.params is already built at this point. Create and add non-url params