Contact information for either a contact person or a company
Inheritance: ContactBaseModel
        private static async Task UpdateContact(Dinero dinero, Contact contact)
        {
            var model = new ContactUpdate()
            {
                ExternalReference = contact.ExternalReference +"TestRef updated",
                Name = contact.Name +" Updated",
                CountryKey = "SE"
            };

            await dinero.Contacts.UpdateAsync(contact.ContactGuid, model);
            Console.WriteLine("Contact updated.");
        }
 private static string ContactToPrintableString(Contact contact)
 {
     return string.Format("{0} - {1} - {2}",
             contact.Name, contact.CountryKey, contact.ExternalReference ?? "");
 }