Apply the appropriate transformations described in Section 10.4.2 to the associations of F...

Apply the appropriate transformations described in Section 10.4.2 to the associations of Figure, Assume that all associations are bidirectional, but that the aggregation associations do not change after each object has been created. In other words, the creator of each class must be modified so that aggregations are initialized during the creation of each object. Write the source code needed to manage the associations, including class, field, and method declarations, method bodies, and visibility.

Figure: Associations among League, Tournament, Round, and Player (UML class diagram).