title: AutoMapper: "Ignore the rest"?
body: <p>Is there a way to tell AutoMapper to ignore all of the properties except the ones which are mapped explicitly? </p>
  
  <p>I have external DTO classes which are likely to change from the outside and I want to avoid specifying each property to be ignored explicitly, since adding new properties will break the functionality (cause exceptions) when trying to map them into my own objects.</p>