/**
* Returns the number of synonyms of a tag object.
*
* @throws \eZ\Publish\API\Repository\Exceptions\UnauthorizedException If the current user is not allowed to read tags
* @throws \eZ\Publish\API\Repository\Exceptions\InvalidArgumentException If the tag is already a synonym
*
* @param \Netgen\TagsBundle\API\Repository\Values\Tags\Tag $tag
* @param array|null $languages A language filter for keywords. If not given all languages are returned.
* @param bool $useAlwaysAvailable Add main language to $languages if true (default) and if tag is always available
*
* @return int
*/
public function getTagSynonymCount(Tag $tag, array $languages = null, $useAlwaysAvailable = true)
{
if ($this->hasAccess('tags', 'read') !== true) {
throw new UnauthorizedException('tags', 'read');
}
if ($tag->mainTagId > 0) {
throw new InvalidArgumentException('tag', 'Tag is a synonym');
}
return $this->tagsHandler->getSynonymCount($tag->id, $languages, $useAlwaysAvailable);
}
