if de.VersionID != "" {
		objInfoStr = fmt.Sprintf("%s version-id=%s", objInfoStr, de.VersionID)
	}
	return fmt.Sprintf("invalid data movement operation, source and destination pool are the same for %s", objInfoStr)
}

func isDataMovementOverWriteErr(err error) bool {
	var de DataMovementOverwriteErr
	return errors.As(err, &de)

    // A few elements.
    a = asList(4, 8, 15, 16, 23, 42);
    b = asList(4, 8, 15, 16, 23, 42);
    assertTrue(elementsEqual(a.iterator(), b.iterator()));

    // The same, but with nulls.
    a = Arrays.<@Nullable Integer>asList(4, 8, null, 16, 23, 42);
    b = Arrays.<@Nullable Integer>asList(4, 8, null, 16, 23, 42);
    assertTrue(elementsEqual(a.iterator(), b.iterator()));

)

var (
	globalHealConfig heal.Config

	// Sleeper values are updated when config is loaded.
	scannerSleeper                       = newDynamicSleeper(2, time.Second, true) // Keep defaults same as config defaults
	scannerCycle                         = uatomic.NewDuration(dataScannerStartDelay)
	scannerIdleMode                      = uatomic.NewInt32(0) // default is throttled when idle

	checksum.Type = checksumType

	// Validate each part and then commit to disk.
	for i, part := range parts {
		partIdx := objectPartIndex(currentFI.Parts, part.PartNumber)
		// All parts should have same part number.
		if partIdx == -1 {
			invp := InvalidPart{
				PartNumber: part.PartNumber,
				GotETag:    part.ETag,
			}
			return oi, invp
		}
		expPart := currentFI.Parts[partIdx]

<img src="/img/tutorial/bigger-applications/image01.png">

## Den gleichen Router mehrmals mit unterschiedlichem `prefix` inkludieren { #include-the-same-router-multiple-times-with-different-prefix }

Sie können `.include_router()` auch mehrmals mit *demselben* Router und unterschiedlichen Präfixen verwenden.

  /** Helper method that asserts the arithmetic mean of x and y is equal to the expectedMean. */
  private static void assertMean(int expectedMean, int x, int y) {
    assertEquals(
        "The expectedMean should be the same as computeMeanSafely",
        expectedMean,
        computeMeanSafely(x, y));
    assertMean(x, y);
  }

  /**
   * Helper method that asserts the arithmetic mean of x and y is equal to the result of

    assertThat(multimap.entries().spliterator().characteristics() & Spliterator.DISTINCT)
        .isEqualTo(0);
  }

  // Yes, we want to test that inverse() returns the same instance each time that it's called.
  @SuppressWarnings("SelfAssertion")
  public void testInverseMinimizesWork() {
    ImmutableListMultimap<String, Character> multimap =

            buffer.putInt(4);
            buffer.putInt(1024);

            // When
            fileFsFullSizeInfo.decode(buffer.array(), 0, 32);

            // Then - multiple calls should return same values
            assertEquals(2000L * 4 * 1024, fileFsFullSizeInfo.getCapacity());
            assertEquals(2000L * 4 * 1024, fileFsFullSizeInfo.getCapacity());

        fireEvent(ResolutionListener.TEST_ARTIFACT, listeners, node);

        Object key = node.getKey();

        // TODO Does this check need to happen here? Had to add the same call
        // below when we iterate on child nodes -- will that suffice?
        if (managedVersions.containsKey(key)) {
            manageArtifact(node, managedVersions, listeners);
        }

<img src="/img/tutorial/bigger-applications/image01.png">

## Включайте той самий router кілька разів з різними `prefix` { #include-the-same-router-multiple-times-with-different-prefix }

Ви також можете використовувати `.include_router()` кілька разів з одним і тим самим router'ом, але з різними префіксами.