private function dumpKeys(IHaveAnSSHKey $user)
{
$ssh_key_id = 0;
$user_name = $user->getUserName();
foreach ($user->getAuthorizedKeysArray() as $key) {
$filePath = $this->getKeyDirPath() . '/' . $user_name . '@' . $ssh_key_id . '.pub';
$this->writeKeyIfChanged($filePath, $key);
$ssh_key_id++;
}
$this->removeUserExistingKeysFromAGivenKeyId($user_name, $ssh_key_id);
}