@classmethod
def _get_url(cls, url, method, operation):
    if (method == 'GET'):
        return ('%s?request=%s' % (url, operation.to_url()))
    return url
@classmethod
def _get_url(cls, url, method, operation):
    if (method == 'GET'):
        return ('%s?request=%s' % (url, operation.to_url()))
    return url