* the current count of the element in the multiset, depending on the implementation. Note that
     * in the former case, this method can never return zero, while in the latter, it will return
     * zero if all occurrences of the element were since removed from the multiset.
     *
     * @return the count of the element; never negative
     */
    int getCount();

    /**

    }
  }

  /*
   * We've split testFuzzyCompare() into multiple tests so that our internal Android test runner has
   * a better chance of completing each within its per-test-method timeout.
   */

  public void testFuzzyCompare0() {
    runTestFuzzyCompare(0);
  }

  public void testFuzzyCompare1() {
    runTestFuzzyCompare(1);

And in those cases, we can use classes and inheritance to take advantage of function **type annotations** to get better support in the editor and tools, and still get the FastAPI **data filtering**.

{* ../../docs_src/response_model/tutorial003_01_py310.py hl[7:10,13:14,18] *}

<a href="https://github.com/fastapi/fastapi/actions?query=workflow%3ATest+event%3Apush+branch%3Amaster" target="_blank">
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    <img src="https://coverage-badge.samuelcolvin.workers.dev/fastapi/fastapi.svg" alt="Coverage">
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```

## `APIRouter`

Vamos supor que o arquivo dedicado a lidar apenas com usuários seja o submódulo em `/app/routers/users.py`.

Você quer manter as *operações de rota* relacionadas aos seus usuários separadas do restante do código, para mantê-lo organizado.

Mas ele ainda faz parte da mesma aplicação/web API **FastAPI** (faz parte do mesmo "pacote Python").

                    .thenReturn(0); // auth_value length

            assertThrows(NdrException.class, () -> message.decode(mockBuffer));
        }
    }

    @Nested
    @DisplayName("Getter Tests")
    class GetterTests {

        @Test
        @DisplayName("getPtype should return correct packet type")
        void testGetPtype() {
            message.ptype = DcerpcConstants.RPC_PT_REQUEST;

    final N node;

    /**
     * The successors left to be visited, or {@code null} if we just added this {@code
     * NodeAndRemainingSuccessors} instance to the stack. In the latter case, we'll compute the
     * successors if we determine that we need them after we've performed the initial processing of
     * the node.
     */
    @Nullable Queue<N> remainingSuccessors;

    NodeAndRemainingSuccessors(N node) {

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    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
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    final N node;

    /**
     * The successors left to be visited, or {@code null} if we just added this {@code
     * NodeAndRemainingSuccessors} instance to the stack. In the latter case, we'll compute the
     * successors if we determine that we need them after we've performed the initial processing of
     * the node.
     */
    @Nullable Queue<N> remainingSuccessors;

    NodeAndRemainingSuccessors(N node) {