| private parseSingleMutationResult ( array $res ) : string | ||
| $res | array | [MutationResult](https://cloud.google.com/datastore/reference/rest/v1/projects/commit#MutationResult) |
| return | string | |
private function parseSingleMutationResult(array $res)
{
$mutationResult = $res['mutationResults'][0];
if (isset($mutationResult['conflictDetected'])) {
throw new DomainException('A conflict was detected in the mutation. ' . 'The operation failed.');
}
return $mutationResult['version'];
}