* Swagger UI.
    * ReDoc.

---

Az önceki örneğe geri dönelim, **FastAPI**'ın yapacaklarına bir bakış atalım:

* `item_id`'nin `GET` ve `PUT` istekleri için, yolda olup olmadığının kontol edecek.
* `item_id`'nin `GET` ve `PUT` istekleri için, tipinin `int` olduğunu doğrulayacak.
    * Eğer değilse, sebebini belirten bir hata mesajı gösterecek.

        }

        @Override
        public int getStatus() {
            return status;
        }

        @Override
        public void setHeader(String name, String value) {
            headers.put(name, value);
        }

        @Override
        public String getHeader(String name) {
            return headers.get(name);
        }

        @Override
        public PrintWriter getWriter() {

                if (!repos.containsKey(repo.getId())) {
                    repos.put(repo.getId(), repo);
                }
            }

            for (ArtifactRepository repo : pomRepositories) {
                if (!repos.containsKey(repo.getId())) {
                    repos.put(repo.getId(), repo);
                }
            }

```python
from fastapi import APIRouter
```

::: fastapi.APIRouter
    options:
        members:
            - websocket
            - include_router
            - get
            - put
            - post
            - delete
            - options
            - head
            - patch
            - trace

 * for the following multimap definition:
 *
 * {@snippet :
 * Multimap<K, V> multimap = LinkedListMultimap.create();
 * multimap.put(key1, foo);
 * multimap.put(key2, bar);
 * multimap.put(key1, baz);
 * }
 *
 * ... the iteration order for {@link #keys()} is {@code [key1, key2, key1]}, and similarly for

For these cases, your **FastAPI** application has an attribute `app.dependency_overrides`, it is a simple `dict`.

To override a dependency for testing, you put as a key the original dependency (a function), and as the value, your dependency override (another function).

And then **FastAPI** will call that override instead of the original dependency.

    /**
     * Associates the specified range with the specified value.
     *
     * @throws IllegalArgumentException if {@code range} is empty
     */
    @CanIgnoreReturnValue
    public Builder<K, V> put(Range<K> range, V value) {
      checkNotNull(range);
      checkNotNull(value);
      checkArgument(!range.isEmpty(), "Range must not be empty, but was %s", range);
      entries.add(immutableEntry(range, value));

   */
  @CanIgnoreReturnValue
  public long put(K key, long newValue) {
    return getAndUpdate(key, x -> newValue);
  }

  /**
   * Copies all of the mappings from the specified map to this map. The effect of this call is
   * equivalent to that of calling {@code put(k, v)} on this map once for each mapping from key

    Collection<V> collection = asMap().get(key);
    return collection != null && collection.remove(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean put(@ParametricNullness K key, @ParametricNullness V value) {
    return get(key).add(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {

   *     FIRST_LETTER_MULTIMAP = MultimapBuilder.treeKeys().arrayListValues().build();
   *     FIRST_LETTER_MULTIMAP.put('b', "anana");
   *     FIRST_LETTER_MULTIMAP.put('a', "pple");
   *     FIRST_LETTER_MULTIMAP.put('a', "sparagus");
   *     FIRST_LETTER_MULTIMAP.put('c', "arrot");
   *     FIRST_LETTER_MULTIMAP.put('c', "herry");
   * }
   * }
   *
   * <p>To collect to an {@link ImmutableMultimap}, use either {@link