128      * @param callable $middleware Middleware function
131     public function unshift(callable $middleware, $name = null)  argument
133         array_unshift($this->stack, [$middleware, $name]);
140      * @param callable $middleware Middleware function
143     public function push(callable $middleware, $name = '')  argument
145         $this->stack[] = [$middleware, $name];
153      * @param callable $middleware Middleware function
156     public function before($findName, callable $middleware, $withName = '')  argument
158         $this->splice($findName, $withName, $middleware, true);
165      * @param callable $middleware Middleware function
168     public function after($findName, callable $middleware, $withName = '')  argument
170         $this->splice($findName, $withName, $middleware, false);
232      * @param callable $middleware
235     private function splice($findName, $withName, callable $middleware, $before)  argument
239         $tuple = [$middleware, $withName];