public function visitDuration($data, Property\DurationType $property, $path)
{
$this->assertRequired($data, $property, $path);
if ($data === null) {
return true;
} elseif ($data instanceof \DateInterval) {
return true;
} elseif (is_string($data)) {
$result = preg_match('/^' . DateTime\Duration::getPattern() . '$/', $data);
if ($result) {
return true;
}
}
throw new ValidationException($path . ' must be an valid duration format [ISO8601]');
}