Как убрать дубликаты из коллекции в laravel?

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$collection = collect([1, 2, 2, 3, 3, 3]);

$unique = $collection->unique();

$unique->all(); // [1, 2, 3]

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$collection = collect([
    ['name' => 'John', 'age' => 20],
    ['name' => 'Jane', 'age' => 20],
    ['name' => 'James', 'age' => 25],
]);

$unique = $collection->unique('age');

$unique->all(); // [['name' => 'John', 'age' => 20], ['name' => 'James', 'age' => 25]]

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$collection = collect([
    ['name' => 'John', 'age' => 20],
    ['name' => 'Jane', 'age' => 20],
    ['name' => 'James', 'age' => 25],
]);

$unique = $collection->groupBy('age')->keys();

$unique->all(); // [20, 25]

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$collection = collect([1, 2, 2, 3, 3, 3]);

$unique = $collection->reduce(function ($carry, $item) {
    if (!in_array($item, $carry)) {
        $carry[] = $item;
    }

    return $carry;
}, []);

$unique; // [1, 2, 3]