private function getOneCached($propertyUri)
    {
        if (is_null($this->cached)) {
            $props = array(static::PROPERTY_INDEX_IDENTIFIER, static::PROPERTY_INDEX_TOKENIZER, static::PROPERTY_INDEX_FUZZY_MATCHING, static::PROPERTY_DEFAULT_SEARCH);
            $this->cached = $this->getPropertiesValues($props);
        }
        return empty($this->cached[$propertyUri]) ? null : reset($this->cached[$propertyUri]);
    }