docs: private static Iterable<String> getAssociationTables(EntityClass entityClass) {
          Iterable<Settable> association = filter(entityClass.getElements(),
                  and(or(has(ManyToMany.class), has(ElementCollection.class)), has(JoinTable.class)));
          return transform(association, new Function<Settable, String>() {
              @Override
              public String apply(Settable input) {
                  JoinTable annotation = input.getAnnotation(JoinTable.class);
                  return annotation.name();
              }
          });
      }