public function addAlias($alias, $facade)
    {
        if ($facadeCurrent = array_get($this->getAliases(), $alias)) {
            if ($facadeCurrent === $facade) {
                return;
            }
            $this->commentOut($alias, 'aliases');
        }

        $quote = $this->getQuoteType('aliases');
        $separator = $this->getArrayItemsSeparator('aliases');
        $anchor = $this->getInsertPoint('aliases');

        $insert = $separator . $quote . $alias . $quote . ' => ' . $quote . $facade . $quote . ',';

        $this->write($insert, $anchor);
    }