public Contact UpdateContact(Contact contact)
        {
            var request = new RestRequest(Method.PUT)
                              {
                                  Resource = "/data/contact/" + contact.id,
                                  RequestFormat = DataFormat.Json
                              };
            request.AddBody(contact);

            var response = _client.Execute<Contact>(request);
            return response.Data;
        }
        public void CreateContactTest()
        {
            Contact contact = new Contact()
                                  {
                                      emailAddress = "*****@*****.**",
                                      firstName = "Joe",
                                      lastName = "Smith",
                                      accountName = "Eloqua Corporation",
                                      businessPhone = "123-456-7890"
                                  };

            var createdContact = _helper.CreateContact(contact);
            Assert.Greater(createdContact.id, 0);
            Assert.AreEqual(contact.emailAddress, createdContact.emailAddress);
        }