Laravel\Lumen\Application::configureMonologUsing PHP Method

    public function configureMonologUsing(callable $callback)
    {
        $this->monologConfigurator = $callback;
        return $this;
    }

 /**
  * Define a callback to be used to configure Monolog.
  *
  * @param callable $callback
  * @return $this 
  * @static 
  */
 public static function configureMonologUsing($callback)
 {
     return \Laravel\Lumen\Application::configureMonologUsing($callback);
 }