如何在Laravel中修改集合的属性值？

$collection = collect([
    ['name' => 'John', 'age' => 25],
    ['name' => 'Jane', 'age' => 30],
    ['name' => 'Tom', 'age' => 35]
]);

$modifiedCollection = $collection->map(function ($item) {
    $item['age'] += 5; // 修改age属性值
    return $item;
});

$modifiedCollection->dump(); // 打印修改后的集合