How to use the fluxible-router.RouteStore.prototype function in fluxible-router

RouteStore.prototype.rehydrate = function rehydrate (state) {
  state.routes = transformer.jsonToFluxible(state.routes);
  return FluxibleRouteStore.prototype.rehydrate.apply(this, arguments);
};

RouteStore.prototype.rehydrate = function rehydrate (state) {
  state.routes = transformer.jsonToFluxible(state.routes);
  return FluxibleRouteStore.prototype.rehydrate.apply(this, arguments);
};

RouteStore.prototype.dehydrate = function dehydrate () {
  const state = FluxibleRouteStore.prototype.dehydrate.apply(this, arguments);
  state.routes = transformer.fluxibleToJson(state.routes);
  return state;
};

RouteStore.prototype.dehydrate = function dehydrate () {
  var state = FluxibleRouteStore.prototype.dehydrate.apply(this, arguments);
  state.routes = transformer.fluxibleToJson(state.routes);
  return state;
};