* MutableValueGraph<String, Double> graph =
 *     ValueGraphBuilder.undirected().allowsSelfLoops(true).build();
 * graph.putEdgeValue("San Francisco", "San Francisco", 0.0);
 * graph.putEdgeValue("San Jose", "San Jose", 0.0);
 * graph.putEdgeValue("San Francisco", "San Jose", 48.4);
 *
 * // Building an immutable value graph
 * ImmutableValueGraph<String, Double> immutableGraph =
 *     ValueGraphBuilder.undirected()

    }

    @Test
    public void test_user_city() {
        final User user = new User();
        assertNull(user.getCity());

        user.setCity("San Francisco");
        assertEquals("San Francisco", user.getCity());
    }

    @Test
    public void test_user_postOfficeBox() {
        final User user = new User();
        assertNull(user.getPostOfficeBox());

  }

  public void testComposition() {
    Map<String, Integer> mJapaneseToInteger = new HashMap<>();
    mJapaneseToInteger.put("Ichi", 1);
    mJapaneseToInteger.put("Ni", 2);
    mJapaneseToInteger.put("San", 3);
    Function<String, Integer> japaneseToInteger = Functions.forMap(mJapaneseToInteger);

    Map<Integer, String> mIntegerToSpanish = new HashMap<>();
    mIntegerToSpanish.put(1, "Uno");

  }

  public void testComposition() {
    Map<String, Integer> mJapaneseToInteger = new HashMap<>();
    mJapaneseToInteger.put("Ichi", 1);
    mJapaneseToInteger.put("Ni", 2);
    mJapaneseToInteger.put("San", 3);
    Function<String, Integer> japaneseToInteger = Functions.forMap(mJapaneseToInteger);

    Map<Integer, String> mIntegerToSpanish = new HashMap<>();
    mIntegerToSpanish.put(1, "Uno");

 *    purpose of the certificate like "Entrust Root Certification Authority - G2" or
 *    "www.squareup.com".
 *
 *  * **A set of hostnames.** These are in the certificate's subject alternative name (SAN)
 *    extension. A subject alternative name is either a literal hostname (`squareup.com`), a literal
 *    IP address (`74.122.190.80`), or a hostname pattern (`*.api.squareup.com`).
 *

* 📝 Add external link to article: How-to deploy FastAPI app to Heroku. PR [#3241](https://github.com/tiangolo/fastapi/pull/3241) by [@Jarmos-san](https://github.com/Jarmos-san).
* ✏ Fix typo (mistranslation) in `docs/en/docs/advanced/templates.md`. PR [#3211](https://github.com/tiangolo/fastapi/pull/3211) by [@oerpli](https://github.com/oerpli).