*/
  @SuppressWarnings("UndefinedEquals")
  public void testRetainAllPropagatesToMultimap() {
    multimap().entries().retainAll(singleton(mapEntry(k0(), v0())));
    assertEquals(getSubjectGenerator().create(mapEntry(k0(), v0())), multimap());
    assertEquals(1, multimap().size());
    assertTrue(multimap().containsEntry(k0(), v0()));
  }

  @CollectionSize.Require(ONE)

  @ListFeature.Require(SUPPORTS_SET)
  public void testSet_replacingNull() {
    E[] elements = createSamplesArray();
    int i = aValidIndex();
    elements[i] = null;
    collection = getSubjectGenerator().create(elements);

    doTestSet(e3());
  }

  private void doTestSet(E newValue) {
    int index = aValidIndex();
    E initialValue = getList().get(index);
    assertEquals(

    private int maxReceiveSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
    private int maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;

    /**
     * Create SMB Direct Negotiate Request
     */
    public SmbDirectNegotiateRequest() {
    }

    /**
     * Encode to byte array
     *
     * @return encoded message
     */
    public byte[] encode() {

    // DiSNI objects - would be actual DiSNI types in real implementation
    private final Object endpoint; // RdmaActiveEndpoint
    private Object memoryRegister; // IbvMr (memory register)

    /**
     * Create new DiSNI memory region
     *
     * @param buffer memory buffer to register
     * @param access access permissions
     * @param endpoint DiSNI endpoint for registration
     */

 Notice that before Maven 3.1.0, with logger created by Maven, some code used to pass logger from class to class because it could not create a new logger:

/**
 * Discovers and loads Maven POM files in a Maven project hierarchy.
 *
 * <p>This class recursively discovers all POM files in a Maven project hierarchy
 * and loads them as domtrip Documents. Individual strategies can create domtrip Editors
 * from these Documents as needed for superior formatting preservation.
 */
public class PomDiscovery {

    private PomDiscovery() {
        // noop
    }

    /**

Si hubiera tareas en segundo plano (cubiertas en la sección [Tareas en segundo plano](background-tasks.md), lo verás más adelante), se ejecutarán *después* de todo el middleware.

///

## Crear un middleware { #create-a-middleware }

Para crear un middleware usas el decorador `@app.middleware("http")` encima de una función.

La función middleware recibe:

* La `request`.

{* ../../docs_src/async_tests/app_a_py310/test_main.py hl[7] *}

/// tip

Note that the test function is now `async def` instead of just `def` as before when using the `TestClient`.

///

Then we can create an `AsyncClient` with the app, and send async requests to it, using `await`.

{* ../../docs_src/async_tests/app_a_py310/test_main.py hl[9:12] *}

This is the equivalent to:

```Python
response = client.get('/')

        assertNotNull(source.get(FieldNames.TIMESTAMP));
    }

    @Test
    public void testFromSource_requiresAllFields() {
        // Create a complete source map with all required fields
        Map<String, Object> source = new HashMap<>();
        source.put(FieldNames.TEXT, "test text");
        source.put(FieldNames.DOC_FREQ, 10L);

     * This is a micro-benchmark to demonstrate the O(1) vs O(n) improvement.
     */
    @Test
    public void test_lookupPerformance_SetFasterThanArray() {
        // Create a large array of fields
        int fieldCount = 1000;
        String[] fields = new String[fieldCount];
        for (int i = 0; i < fieldCount; i++) {
            fields[i] = "field" + i;
        }