Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [name] => node 1
                    [parent] => 0
                )

            [1] => Array
                (
                    [id] => 10
                    [name] => node 2
                    [parent] => 0
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [id] => 2
                    [name] => node 1-1
                    [parent] => 1
                )

            [1] => Array
                (
                    [id] => 3
                    [name] => node 1-2
                    [parent] => 1
                )

            [2] => Array
                (
                    [id] => 7
                    [name] => node 1-3
                    [parent] => 1
                )

            [3] => Array
                (
                    [id] => 8
                    [name] => node 1-4
                    [parent] => 1
                )

            [4] => Array
                (
                    [id] => 9
                    [name] => node 1-5
                    [parent] => 1
                )

        )

    [3] => Array
        (
            [0] => Array
                (
                    [id] => 4
                    [name] => node 1-2-1
                    [parent] => 3
                )

            [1] => Array
                (
                    [id] => 5
                    [name] => node 1-2-2
                    [parent] => 3
                )

            [2] => Array
                (
                    [id] => 6
                    [name] => node 1-2-3
                    [parent] => 3
                )

        )

    [10] => Array
        (
            [0] => Array
                (
                    [id] => 11
                    [name] => node 2-1
                    [parent] => 10
                )

            [1] => Array
                (
                    [id] => 12
                    [name] => node 2-2
                    [parent] => 10
                )

            [2] => Array
                (
                    [id] => 14
                    [name] => node 2-3
                    [parent] => 10
                )

        )

    [12] => Array
        (
            [0] => Array
                (
                    [id] => 13
                    [name] => node 2-2-1
                    [parent] => 12
                )

        )

)