nouveau-theatre-de-besancon/site/plugins/mapado-check/index.php

<?php

Kirby::plugin('getkirby/mapado-check', [
  'fields' => [
    'mapado-check' => [
      "props" => [
        "mapadoToken" => function() {
          return $this->model()->site()->mapadoToken()->value();
        }
      ]
    ]
  ],
]);