@Nullable
    @WorkerThread
    public static String getResponseData(final Single<Response> response) {
        try {
            return response.flatMap(getResponseDataReplaceWhitespace).blockingGet();
        } catch (final Exception ignored) {
            return null;
        }
    }
Get the body of a HTTP response.

@param response a HTTP response
@return the body with whitespace replaced if the response comes from a successful HTTP request, {@code null} otherwise
main/src/main/java/cgeo/geocaching/network/Network.java