| @@ -13,9 +13,9 @@ | ||
| 13 | 13 | * @param callable|null $fnDispatcher Function dispatching function that accepts |
| 14 | 14 | * a function name argument and an array of |
| 15 | 15 | * function arguments and returns the result. |
| 16 | 16 | */ |
| 17 | - public function __construct(callable $fnDispatcher = null) | |
| 17 | + public function __construct(?callable $fnDispatcher = null) | |
| 18 | 18 | { |
| 19 | 19 | $this->fnDispatcher = $fnDispatcher ?: FnDispatcher::getInstance(); |
| 20 | 20 | } |
| 21 | 21 | /** |
