private function storeRun(Run $run)
{
$this->query("INSERT OR IGNORE INTO {{prefix}}run (run_identifier, run_ran_at) VALUES ('%s', '%s')", array($run->getRunIdentifier(), $run->getRanAt()));
return $this->selectOne("SELECT run_id FROM {{prefix}}run WHERE run_identifier = '%s'", array($run->getRunIdentifier()));
}