Bolt\Storage\Repository\UsersRepository::hasUsers PHP Method

    public function hasUsers()
    {
        $query = $this->hasUsersQuery();
        return $query->execute()->fetch();
    }

 /**
  * Log out the currently logged in user.
  *
  * @return boolean
  */
 public function revokeSession()
 {
     try {
         // Only show this flash if there are users in the system.
         // Not when we're about to get redirected to the "first users" screen.
         if ($this->repositoryUsers->hasUsers()) {
             $this->flashLogger->info(Trans::__('You have been logged out.'));
         }
     } catch (TableNotFoundException $e) {
         // If we have no table, then we definitely have no users
     }
     // Remove all auth tokens when logging off a user
     if ($sessionAuth = $this->session->get('authentication')) {
         $this->repositoryAuthtoken->deleteTokens($sessionAuth->getUser()->getUsername());
     }
     $this->session->remove('authentication');
     $this->session->migrate(true);
     return false;
 }