Determine if a Network has any sites created already

I solved it by doing using this code:

global $current_site;
$current_site_id = $current_site->id;
$args = array(
    'network_id' => $current_site_id,
);
$site_info = wp_get_sites( $args );
$num_of_sites = sizeof($site_info);

If anyone has a more elegant way of solving please post your answer.