protected function get_additional_fields($object_type = null)
{
if (!$object_type) {
$object_type = $this->get_object_type();
}
if (!$object_type) {
return array();
}
global $wp_rest_additional_fields;
if (!$wp_rest_additional_fields || !isset($wp_rest_additional_fields[$object_type])) {
return array();
}
return $wp_rest_additional_fields[$object_type];
}