PHP 8.4.x deprecation warnings

Xem xét các chữ ký resolveReferences trong SpecBaseObject.php, SpecObjectInterface.php, spec/Paths.php, spec/PathItem.php và spec/Responses.php, cùng với constructor và các phương thức resolve trong spec/Reference.php. Cập nhật các tham số nullable ngầm được xác định trong các cảnh báo và xác minh trên PHP 8.4 rằng các cảnh báo không dùng nữa này không còn xuất hiện.

With the release of PHP 8.4, implicitly marking parameters as nullable is now deprecated.

The dev-master version of this package contains a few warnings because of this:

<warning> DEPRECATED </warning> cebe\openapi\SpecBaseObject::resolveReferences(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/SpecBaseObject.php on line 396.
<warning> DEPRECATED </warning> cebe\openapi\SpecObjectInterface::resolveReferences(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/SpecObjectInterface.php on line 43.
<warning> DEPRECATED </warning> cebe\openapi\spec\Paths::resolveReferences(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/spec/Paths.php on line 249.
<warning> DEPRECATED </warning> cebe\openapi\spec\PathItem::resolveReferences(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/spec/PathItem.php on line 153.
<warning> DEPRECATED </warning> cebe\openapi\spec\Responses::resolveReferences(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/spec/Responses.php on line 239.
<warning> DEPRECATED </warning> cebe\openapi\spec\Reference::__construct(): Implicitly marking parameter $to as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/spec/Reference.php on line 72.
<warning> DEPRECATED </warning> cebe\openapi\spec\Reference::resolve(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/spec/Reference.php on line 179.
<warning> DEPRECATED </warning> cebe\openapi\spec\Reference::resolveReferences(): Implicitly marking parameter $context as nullable is deprecated, the explicit nullable type must be used instead in vendor/cebe/php-openapi/src/spec/Reference.php on line 366.

Example:

public function resolveReferences(ReferenceContext $context = null); // SpecObjectInterface.php #43