public function get($string)
    {
        $lowercase = strtolower($string);

        if (!parent::has($lowercase))
        {
            if (isset($this->_aliases[$lowercase])) {
                $key = $this->_aliases[$lowercase];
            }
            else if(!JFactory::getLanguage()->hasKey($string))
            {
                if (substr($string, 0, strlen($this->getPrefix())) === $this->getPrefix()) {
                    $key = $string;
                } else {
                    //Gets a key from the catalogue and prefixes it
                    $key = $this->getPrefix().$this->generateKey($string);
                }
            }
            else $key = $string;

            $this->set($lowercase, JFactory::getLanguage()->_($key));
        }

        return parent::get($lowercase);
    }