Retrieve iPhone Address Book sorting preference programmatically?

Is it possible to detect开发者_如何学运维 the sorting technique used by the Address Book on a particular user's phone? (For instance, "sort by last name" or "sort by first name".)

Thanks.

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From the docs

ABPersonGetSortOrdering
Returns the user’s sort ordering preference for lists of persons.

ABPersonSortOrdering ABPersonGetSortOrdering (
   void
);