Asserts that a static attribute of a class or an attribute of an object is empty.
@since Method available since Release 3.5.0
string $haystackAttributeName:
mixed $haystackClassOrObject:
string $message:
public static function assertAttributeEmpty($haystackAttributeName, $haystackClassOrObject, $message = '') {
self::assertEmpty(self::readAttribute($haystackClassOrObject, $haystackAttributeName), $message);
}