incorrect hook implementation

In node_deploy.module:

/**
 * Implementation of hook_deploy_check().
 *
 * Used to manage deployment dependencies
 *
 * @param $nid
 *   Nid of the node we're trying to deploy
 */
function node_deploy_check($nid) {

Really?
node_deploy_deploy_check, surely?
Unless the plan is to register the hook on behalf of core node module, in which case the function doxygen header could do to say that.