anchor.diff:           put_zone/1,
            put_zone/2,
            delete_zone/1,
  +         update_zone_records_and_digest/3,
   	 put_zone_rrset/4,
   	 delete_zone_rrset/5
           ]).
  
positive.code:          in_zone/1,
           record_name_in_zone/2,
           zone_names_and_versions/0,
  	 get_rrset_sync_counter/3,
  	 update_zone_records_and_digest/3
          ]).
  
  % Write APIs
  
negative.code:          find_zone/1,
           find_zone/2,
           get_zone/1,
           get_authority/1,
           get_delegations/1,
           get_zone_records/1,
  