public function register_fields() {
		foreach ( Event_Meta::$virtual_event_keys as $key ) {
			register_post_meta(
				'tribe_events',
				$key,
				[
					'show_in_rest'  => true,
					'single'        => true,
					'type'          => 'string',
					'auth_callback' => static function() {
						return current_user_can( 'edit_posts' );
					},
				]
			);
		}
	}