/**
  * Create a new resource not found exception.
  *
  * @param  string     $resource
  * @param  \Exception $previous (default: null)
  * @return void
  */
 public function __construct($resource, \Exception $previous = null)
 {
     parent::__construct($resource, "The (requested) resource \"{$resource}\" was not found.", Response::HTTP_NOT_FOUND, $previous);
 }
 /**
  * Create a new resource missing validation exception.
  *
  * @param  string     $resource
  * @param  \Exception $previous (default: null)
  * @return void
  */
 public function __construct($resource, \Exception $previous = null)
 {
     parent::__construct($resource, "The resource \"{$resource}\" has no validation implementation, making it unavailable for user input.", Response::HTTP_NOT_IMPLEMENTED, $previous);
 }