private static void DeleteFriendship(OAuthTokens tokens, TwitterRelationship friendship)
 {
     var unfollowedUser = friendship.Delete(tokens);
     Assert.IsNotNull(unfollowedUser.ResponseObject, unfollowedUser.ErrorMessage);
 }
 private static void DeleteFriendship(OAuthTokens tokens, TwitterRelationship friendship)
 {
     TwitterUser unfollowedUser = friendship.Delete(tokens).ResponseObject;
     Assert.IsNotNull(unfollowedUser);
 }