/**
  * Get Handler
  *
  * @param OperationReference $operation
  *
  * @return array
  */
 public function getHandler(OperationReference $operation)
 {
     // remove route parameters
     $path = preg_replace('/\\/\\{.*\\}/', '', $operation->getPath());
     // lowerCamelCase to UpperCamelCase
     $paths = explode('/', $path);
     // path start with a /
     unset($paths[0]);
     $paths = array_map(function ($path) {
         return ucfirst($path);
     }, $paths);
     // path to 'relative' namespace
     $path = implode('\\', $paths);
     $controller = $this->namespace . $path . 'Controller';
     return ['uses' => $controller . '@' . $this->httpVerbToControllerMethod[strtoupper($operation->getMethod())], 'as' => $operation->getOperationId()];
 }