public function get($id)
    {
        if (isset($this->connections[$id])) {
            return $this->connections[$id];
        }

        if (!isset($this->config[$id])) {
            throw new JAQBException('No configuration or connection has been supplied for the ID "'.$id.'".');
        }

        $this->connections[$id] = $this->buildFromConfig($this->config[$id], $id);

        return $this->connections[$id];
    }