@Nullable
    public static String getResponseData(final Response response) {
        return getResponseData(response, true);
    }
Get the body of a HTTP response.
<br>
{@link TextUtils#replaceWhitespace(String)} will be called on the result

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