code: func (r Network_ContentDelivery_Account) SetAuthenticationServiceEndpoint(webserviceEndpoint *string, protocol *string) (resp bool, err error) {
  	params := []interface{}{
  		webserviceEndpoint,
  		protocol,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_ContentDelivery_Account", "setAuthenticationServiceEndpoint", params, &r.Options, &resp)
  	return
  }
docs: // CDN servers will invoke a Web Service method to validate a content authentication token. CDN uses the default Web Service provided by SoftLayer to validate a token. A customer can use their own implementation of the token authentication Web Service.