}
	// as per the doc, only 11 fields are guaranteed
	// only set if available
	if len(stats) > 14 {
		iostats.DiscardIOs = stats[11]
		iostats.DiscardMerges = stats[12]
		iostats.DiscardSectors = stats[13]
		iostats.DiscardTicks = stats[14]
	}
	return iostats, err
}

func readStat(fileName string) (stats []uint64, err error) {
	file, err := os.Open(fileName)
	if err != nil {
		return nil, err
	}

Por exemplo, você pode adicionar um cabeçalho personalizado `X-Process-Time` contendo o tempo em segundos que levou para processar a solicitação e gerar uma resposta:

{* ../../docs_src/middleware/tutorial001_py39.py hl[10,12:13] *}

/// tip | Dica

        assertEquals("   j", s315, "11");
        String s314 = props1.getProperty("space");
        assertEquals("   c", s314, "12");
        String s313 = props1.getProperty("dblbackslash");
        assertEquals("\\", s313, "13");

        String s312 = props2.getProperty(" \r");
        assertEquals("\n \t \f", s312, "1");
        String s311 = props2.getProperty("a");
        assertEquals("a", s311, "2");

5. **Encoding Support**: 12 tests

### Coverage by Extractor:
- AbstractExtractor: 11 tests
- MsWordExtractor: 3 tests
- MsExcelExtractor: 3 tests
- MsPowerPointExtractor: 3 tests
- TextExtractor: 13 tests
- FilenameExtractor: 10 tests
- ZipExtractor: 6 tests
- TarExtractor: 6 tests

## Running the Tests

### Run all extractor tests:
```bash
mvn test -Dtest=Extractor*Test
```

  }

  @ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
  @CollectionSize.Require(absent = {ZERO, ONE})
  public void testSubList_subListRemoveAffectsOriginalLargeList() {
    List<E> subList = getList().subList(1, 3);
    subList.remove(e2());
    List<E> expected = copyToList(createSamplesArray());
    expected.remove(2);
    expectContents(expected);
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)

    // 12 elements won't overflow
    assertEquals(
        479001600 /*12!*/,
        Collections2.orderedPermutations(newArrayList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12))
            .size());
    // 13 elements overflow an int
    assertEquals(
        Integer.MAX_VALUE,
        Collections2.orderedPermutations(newArrayList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13))
            .size());

  }

  @ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
  @CollectionSize.Require(absent = {ZERO, ONE})
  public void testSubList_subListRemoveAffectsOriginalLargeList() {
    List<E> subList = getList().subList(1, 3);
    subList.remove(e2());
    List<E> expected = copyToList(createSamplesArray());
    expected.remove(2);
    expectContents(expected);
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)

그리고 `response` 또한 생성된 후 반환되기 전에 코드를 추가 할 수 있습니다.

예를 들어, 요청을 수행하고 응답을 생성하는데 까지 걸린 시간 값을 가지고 있는 `X-Process-Time` 같은 사용자 정의 헤더를 추가할 수 있습니다.

{* ../../docs_src/middleware/tutorial001.py hl[10,12:13] *}

## 다른 미들웨어

미들웨어에 대한 더 많은 정보는 [숙련된 사용자 안내서: 향상된 미들웨어](../advanced/middleware.md){.internal-link target=\_blank}에서 확인할 수 있습니다.

{* ../../docs_src/middleware/tutorial001_py39.py hl[10,12:13] *}

/// tip | Tipp

   * properties, including:
   *
   * <ul>
   *   <li>{@code java.vendor.version} (added in Java 11, listed as optional as of Java 13)
   *   <li>{@code jdk.module.*} (added in Java 9, optional)
   * </ul>
   */
  public @Nullable String value() {
    return System.getProperty(key);
  }