private function createOperationOutput(array &$output, OperationInterface $operation)
{
$operationHandler = $this->getOperationHandler($operation);
if (!$operationHandler) {
return;
}
$output[] = '';
$urlGenerator = $this->getUrlGenerator($operationHandler->extractSourceUrl($operation));
$output = array_merge($output, $operationHandler->getOutput($operation, $urlGenerator));
}