Dwolla\RestClient::__construct PHP Method

    public function __construct()
    {
        self::$settings = new Settings();
        self::$settings->host = self::$settings->sandbox ? self::$settings->sandbox_host : self::$settings->production_host;
        $this->settings = self::$settings;
        $p = ['defaults' => ['headers' => ['Content-Type' => 'application/json', 'User-Agent' => 'dwolla-php/2'], 'timeout' => self::$settings->rest_timeout]];
        if (self::$settings->proxy) {
            $p['proxy'] = self::$settings->proxy;
        }
        $this->client = new Client($p);
    }