Page::delete

public function delete()
{
	if ($this->storage === null)
	{
		return false;
	}

	$deletedSize = $this->storage->delete();
	if ($deletedSize !== false && $this->storage->shouldCountQuota())
	{
		Helper::updateCacheFileSize(-$deletedSize);
	}

	PageManager::deleteByCacheKey($this->cacheKey);

	return $deletedSize;
}