متد Merge کالکشن لاراول | چگونه دو Collection را با هم ادغام کنیم ؟

public function index()
{
    $firstCollection = collect(['One', 'Two', 'Three']);
    $secondCollection = collect(['Four', 'Five']);
    $mergedCollection = $firstCollection->merge($secondCollection);
    $mergedCollection->all();
    dd($mergedCollection);
}

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => One
            [1] => Two
            [2] => Three
            [3] => Four
            [4] => Five
        )
)

public function index()
{
    $firstCollection = collect(['One', 'Two', 'Three']);
    $secondCollection = collect(['Three', 'Four', 'Five']);
    $mergedCollection = $firstCollection->merge($secondCollection);
    $mergedCollection = $mergedCollection->unique(function ($item) {
        return $item;
    });
    $mergedCollection->all();
    dd($mergedCollection);
}

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => One
            [1] => Two
            [2] => Three
            [4] => Four
            [5] => Five
        )
)

public function index()
{
    $firstCollection = Patient::get();
    $secondCollection = User::get();
    $mergedCollection = $firstCollection->merge($secondCollection);
    $mergedCollection->all();
}