final String[] defaultSortValues = fessConfig.getDefaultSortValues(getUserBean());
            if (defaultSortValues.length == 1) {
                form.sort = defaultSortValues[0];
            } else if (defaultSortValues.length >= 2) {
                final StringBuilder sortValueSb = new StringBuilder();
                final Set<String> sortFieldNames = new HashSet<>();

    CacheTesting.checkValidState(cache);
  }

  /**
   * Tests that when a single entry exceeds the segment's max weight, the new entry is immediately
   * evicted and nothing else.
   */
  public void testEviction_maxWeight_entryTooBig() {
    CountingRemovalListener<Integer, Integer> removalListener = countingRemovalListener();
    IdentityLoader<Integer> loader = identityLoader();

# Handling Errors { #handling-errors }

There are many situations in which you need to notify an error to a client that is using your API.

This client could be a browser with a frontend, a code from someone else, an IoT device, etc.

You could need to tell the client that:

* The client doesn't have enough privileges for that operation.
* The client doesn't have access to that resource.
* The item the client was trying to access doesn't exist.
* etc.

		return payload, 0, 0, fmt.Errorf("xlMeta: unknown XLv2 header, expected %v, got %v", xlHeader[:4], buf[:4])
	}

	if bytes.Equal(buf[4:8], []byte("1   ")) {
		// Set as 1,0.
		major, minor = 1, 0
	} else {
		major, minor = binary.LittleEndian.Uint16(buf[4:6]), binary.LittleEndian.Uint16(buf[6:8])
	}
	if major > xlVersionMajor {
		return buf[8:], major, minor, fmt.Errorf("xlMeta: unknown major version %d found", major)
	}

                                logger.warn("Authentication Failure: {} - Reason: {}", errors.stream().collect(Collectors.joining(", ")),
                                        auth.getLastErrorReason());
                            } else {
                                logger.warn("Authentication Failure: {}", errors.stream().collect(Collectors.joining(", ")));
                            }
                            return null;
                        }

            byte[] encoded = init.toByteArray();
            NegTokenInit parsed = new NegTokenInit(encoded);

            if (mechanisms == null) {
                assertNull(parsed.getMechanisms());
            } else {
                assertArrayEquals(mechanisms, parsed.getMechanisms());
            }
        }

        static Stream<Arguments> provideMechanismCombinations() {

      // buildOrThrow() to fail, or by changing the size.
      @Nullable Entry<K, V>[] localEntries;
      int localSize = size;
      if (valueComparator == null) {
        localEntries = entries;
      } else {
        if (entriesUsed) {
          entries = Arrays.copyOf(entries, size);
        }
        @SuppressWarnings("nullness") // entries 0..localSize-1 are non-null

		return nil
	}
	newDisks := make([]StorageAPI, len(disks))
	for index := range errs {
		if errs[index] == nil {
			newDisks[index] = disks[index]
		} else {
			newDisks[index] = nil
		}
	}
	return newDisks
}

// Errors specifically generated by calculatePartSizeFromIdx function.
var (
	errPartSizeZero  = errors.New("Part size cannot be zero")

func (iamOS *IAMObjectStore) loadMappedPolicies(ctx context.Context, userType IAMUserType, isGroup bool, m *xsync.MapOf[string, MappedPolicy]) error {
	var basePath string
	if isGroup {
		basePath = iamConfigPolicyDBGroupsPrefix
	} else {
		switch userType {
		case svcUser:
			basePath = iamConfigPolicyDBServiceAccountsPrefix
		case stsUser:
			basePath = iamConfigPolicyDBSTSUsersPrefix
		default:
			basePath = iamConfigPolicyDBUsersPrefix

}

func (w *writerAt) WriteAt(b []byte, offset int64) (n int, err error) {
	w.m.Lock()
	defer w.m.Unlock()

	if w.nextOffset == offset {
		n, err = w.w.Write(b)
		w.nextOffset += int64(n)
	} else {
		if offset > w.nextOffset+ftpMaxWriteOffset {
			return 0, fmt.Errorf("write offset %d is too far ahead of next offset %d", offset, w.nextOffset)
		}
		w.buffer[offset] = make([]byte, len(b))