.+)', [ 'methods' => 'GET', 'callback' => function ($data) { return RL_MailWarmer_Domain_Helper::check_domain_health($data['domain']); }, ]); register_rest_route('rl-mailwarmer/v1', '/generate-domain-report/(?P.+)', [ 'methods' => 'GET', 'callback' => function ($data) { return RL_MailWarmer_Domain_Helper::generateDomainReport($data['domain']); }, ]); });