public TrackerConfig(@NonNull String apiUrl, int siteId, String trackerName) {
        try {
            if (apiUrl.endsWith("piwik.php") || apiUrl.endsWith("piwik-proxy.php")) {
                mApiUrl = new URL(apiUrl);
            } else {
                if (!apiUrl.endsWith("/")) apiUrl += "/";
                mApiUrl = new URL(apiUrl + "piwik.php");
            }
        } catch (MalformedURLException e) { throw new RuntimeException(e); }
        mSiteId = siteId;
        mTrackerName = trackerName;
    }