DevKitAddCustomer

//Intuit.Ipp.Security exposes OAuthRequestValidator
//IntuitAnywhere.utils exposes Initializer
OAuthRequestValidator oauthValidator = Initializer.InitializeOAuthValidator(accessToken, accessTokenSecret, consumerKey, consumerSecret);

//Intuit.Ipp.Core exposes ServiceContext
ServiceContext context = Initializer.InitializeServiceContext(oauthValidator, realmId, appToken, string.Empty, dataSourcetype);

//Intuit.Ipp.Services exposes DataServices
DataServices commonService = new DataServices(context);

var cust = new Intuit.Ipp.Data.Qbd.Customer()
                                        {
                                            Name = "John Smith",
                                        };

var custResponse = commonService.Add(cust);