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1   package se.citerus.dddsample.domain.model.cargo;
2   
3   import java.util.List;
4   
5   public interface CargoRepository {
6   
7     /**
8      * Finds a cargo using given id.
9      *
10     * @param trackingId Id
11     * @return Cargo if found, else {@code null}
12     */
13    Cargo find(TrackingId trackingId);
14  
15    /**
16     * Finds all cargo.
17     *
18     * @return All cargo.
19     */
20    List<Cargo> findAll();
21  
22    /**
23     * Saves given cargo.
24     *
25     * @param cargo cargo to save
26     */
27    void store(Cargo cargo);
28  
29    /**
30     * @return A unique, generated tracking Id.
31     */
32    TrackingId nextTrackingId();
33  
34  }