/// <summary>
        /// 
        /// </summary>
        ///<param name="updateAuthorizationReq"></param>
        ///<param name="credential">An explicit ICredential object that you want to authenticate this call against</param> 
        public UpdateAuthorizationResponseType UpdateAuthorization(UpdateAuthorizationReq updateAuthorizationReq, ICredential credential)
        {
            setStandardParams(updateAuthorizationReq.UpdateAuthorizationRequest);
            DefaultSOAPAPICallHandler defaultHandler = new DefaultSOAPAPICallHandler(this.config, updateAuthorizationReq.ToXMLString(null, "UpdateAuthorizationReq"), null, null);
            IAPICallPreHandler apiCallPreHandler = new MerchantAPICallPreHandler(this.config, defaultHandler, credential);
            ((MerchantAPICallPreHandler) apiCallPreHandler).SDKName = SDKName;
            ((MerchantAPICallPreHandler) apiCallPreHandler).SDKVersion = SDKVersion;
            ((MerchantAPICallPreHandler) apiCallPreHandler).PortName = "PayPalAPIAA";

            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.LoadXml(Call(apiCallPreHandler));
            return new UpdateAuthorizationResponseType(
                xmlDocument.SelectSingleNode("*[local-name()='Envelope']/*[local-name()='Body']/*[local-name()='UpdateAuthorizationResponse']")
            );
        }
 /// <summary> 
 /// 
 /// </summary>
 ///<param name="updateAuthorizationReq"></param>
 public UpdateAuthorizationResponseType UpdateAuthorization(UpdateAuthorizationReq updateAuthorizationReq)
 {
     return UpdateAuthorization(updateAuthorizationReq,(string) null);
 }