如何在laravel集合中添加额外的元素

$collection = collect([1, 2, 3]);
$collection->push(4);

// 输出：[1, 2, 3, 4]

$collection = collect([1, 2, 3]);
$collection->push([4, 5]);

// 输出：[1, 2, 3, [4, 5]]

$collection = collect([1, 2, 3]);
$collection->push(...[4, 5]);

// 输出：[1, 2, 3, 4, 5]