public function revertToDraft($blocks)
{
$single = !is_array($blocks) && $blocks instanceof BlockInterface;
if ($single) {
$blocks = array($blocks);
}
foreach ($blocks as $key => $block) {
$currentRevision = $this->revisionManager->getCurrentRevision($block);
$latestRevision = $this->revisionManager->getLatestRevision($block);
if ($latestRevision !== false && $currentRevision < $latestRevision) {
try {
$this->revisionManager->revert($block, $latestRevision);
} catch (DeletedException $e) {
unset($blocks[$key]);
}
}
}
return $single ? array_shift($blocks) : $blocks;
}