return i++;
          }
        };

    LoadingCache<Integer, Integer> cache = CacheBuilder.newBuilder().build(loader);

    cache.put(10, 20);

    Map<Integer, Integer> map = cache.getAll(ImmutableList.of(10, 20, 30, 54, 443, 1));

    assertThat(map).containsEntry(10, 20);
    assertThat(map).containsEntry(20, 0);
    assertThat(map).containsEntry(30, 1);
    assertThat(map).containsEntry(54, 2);

     * @return the last element, or null if the collection is empty
     * @since Java 21
     */
    public static <E> E getLast(final SequencedCollection<E> collection) {
        return collection.isEmpty() ? null : collection.getLast();
    }

    /**
     * Adds an element to the beginning of a sequenced collection.
     *
     * @param <E> the element type

#### `HeroBase` – die Basisklasse { #herobase-the-base-class }

Fangen wir mit einem `HeroBase`-Modell an, das alle **Felder hat, die von allen Modellen geteilt werden**:

* `name`
* `age`

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[7:9] hl[7:9] *}

#### `Hero` – das *Tabellenmodell* { #hero-the-table-model }

            @Override
            public java.util.Collection<jakarta.servlet.http.Part> getParts() {
                return null;
            }

            @Override
            public jakarta.servlet.http.Part getPart(String name) {
                return null;
            }

            @Override
            public <T extends jakarta.servlet.http.HttpUpgradeHandler> T upgrade(Class<T> handlerClass) {
                return null;

    private final int size;

    ComplementRanges(ImmutableList<Range<C>> ranges) {
      this.ranges = ranges;
      this.positiveBoundedBelow = ranges.get(0).hasLowerBound();
      this.positiveBoundedAbove = Iterables.getLast(ranges).hasUpperBound();

      int size = ranges.size() - 1;
      if (positiveBoundedBelow) {
        size++;
      }
      if (positiveBoundedAbove) {
        size++;
      }

In diesem Beispiel wird es ganz einfach sein. Nehmen wir jedoch an, dass wir, da sie mit anderen Projekten in der Organisation geteilt wird, sie nicht ändern und kein `prefix`, `dependencies`, `tags`, usw. direkt zum `APIRouter` hinzufügen können:

{* ../../docs_src/bigger_applications/app_an_py310/internal/admin.py hl[3] title["app/internal/admin.py"] *}

      }
    }

    @Override
    public V apply(K key) {
      return getUnchecked(key);
    }

    @Override
    public ImmutableMap<K, V> getAll(Iterable<? extends K> keys) throws ExecutionException {
      Map<K, V> map = new LinkedHashMap<K, V>();
      for (K key : keys) {
        map.put(key, localCache.getOrLoad(key));
      }

        public java.util.Collection<jakarta.servlet.http.Part> getParts() {
            return java.util.Collections.emptyList();
        }

        @Override
        public jakarta.servlet.http.Part getPart(String name) {
            return null;
        }

        @Override
        public <T extends jakarta.servlet.http.HttpUpgradeHandler> T upgrade(Class<T> handlerClass) {
            return null;

    @Override
    public V getUnchecked(K key) {
      return autoDelegate.getUnchecked(key);
    }

    @Override
    public ImmutableMap<K, V> getAll(Iterable<? extends K> keys) throws ExecutionException {
      return autoDelegate.getAll(keys);
    }

    @Override
    public V apply(K key) {
      return autoDelegate.apply(key);
    }

    @Override

        }

        @Override
        public java.util.Collection<jakarta.servlet.http.Part> getParts() {
            return null;
        }

        @Override
        public jakarta.servlet.http.Part getPart(String name) {
            return null;
        }

        @Override
        public <T extends jakarta.servlet.http.HttpUpgradeHandler> T upgrade(Class<T> handlerClass) {
            return null;
        }