code: function addRoute(method, url, callbacks) {
  	debug('adding route (method: `%s`, url: `%s`)', method, url);
  
  	var urlParamKeys = []
  		, regexp = urlRegexp(url, urlParamKeys, true, true);
  
  	if(_.isUndefined(this.apiRoutes)) { this.apiRoutes = {}; }
  	if(_.isUndefined(this.apiRoutes[method])) { this.apiRoutes[method] = {}; }
  
  	createExpressJsRoute.call(
  		this, url, callbacks, this.app[method], this.app
  	);
  
  	this.apiRoutes[method][url] = {
  		callback: callbacks
  		, regexp: regexp
  		, keys: urlParamKeys
  	};
  }
docs: PrivateFunction: addRoute
  The functions generated by <createRouteFactories> use this function to create
  an actual api route.
  
  To accomplish this, this creates a concrete Express.JS route which can be
  reached via REST HTTP. To make the route callable locally, it gets saved into
  the apiRoutes variable.
  
  Parameters:
  (String) method - The HTTP method for this route
  (String) url - The URL for this route. Gets prepared with <prepareAPIUrl>
  (Function)/(Array) callbacks - An API function which should be executed.
  If you pass an array with functions, each
  function gets executed as it is stacked
  upon the array.