page.duplicate:after
$duplicatePage, $originalPage
return [
    'hooks' => [
        'page.duplicate:after' => function ($duplicatePage, $originalPage) {
            // your code goes here
        }
    ]
]$duplicatePage, $originalPage
return [
    'hooks' => [
        'page.duplicate:after' => function ($duplicatePage, $originalPage) {
            // your code goes here
        }
    ]
]