public function render(NodeInterface $node = null, $mode = null)
{
$context = $this->getNodeContext($node);
$renderingMode = $context->getCurrentRenderingMode();
if ($mode !== null) {
$result = $renderingMode->getName() === $mode && $renderingMode->isPreview();
} else {
$result = $renderingMode->isPreview();
}
return $result;
}