//------ Function 1
    public function base_menu()
    {
        $menus = [
            'base' =>
            [
                'dashboard' =>
                    [
                        'url'           => 'backend',
                        'icon'          => 'fa fa-home',
                        'permission'    => 'permission',
                        'role'          => false,
                        'string'        => 'Dashboard',
                        'trans'         => 'Base::navigation.backend.navigation.dashboard',
                        'sequence'      => '1'
                    ],
                'role' =>
                    [
                        'url'           => 'backend/roles',
                        'icon'          => 'fa fa-lock',
                        'permission'    => 'view.role.menu',
                        'role'          => false,
                        'string'        => 'Role & Permission',
                        'trans'         => false,
                        'sequence'      => '1'
                    ],
                'settings' =>
                    [
                        'url'           => false,
                        'icon'          => 'fa fa-cogs',
                        'permission'    => 'permission',
                        'role'          => 'role',
                        'string'        => 'Settings',
                        'trans'         => false,
                        'sequence'      => '1'
                    ],
                'users' =>
                    [
                        'url'           => 'backend/users',
                        'icon'          => 'fa fa-users',
                        'permission'    => 'user.index',
                        'role'          => false,
                        'string'        => 'Users',
                        'trans'         => false,
                        'sequence'      => '1'
                    ]
            ],
        ];

        return $menus;
    }

//------ function 2


    public function voucher_menu()
    {
        $menus = [
            'Voucher' =>
            [
                'Voucher' =>
                    [
                        'url'           => 'backend/voucher',
                        'icon'          => 'fa fa-home',
                        'permission'    => 'permission',
                        'role'          => false,
                        'string'        => 'Voucher',
                        'trans'         => '',
                        'sequence'      => '1'
                    ]
            ],
        ];

        return $menus;
    }