PrototypeItemIndex::prepareFullTextQuery

static function prepareFullTextQuery(string $query): ?string
{
	$query = trim($query);
	if (Content::isIntegerToken($query))
	{
		$query = Content::prepareIntegerToken($query);
	}
	else
	{
		$query = Content::prepareStringToken($query);
	}

	if(Content::canUseFulltextSearch($query, Content::TYPE_MIXED))
	{
		return $query;
	}

	return null;
}