format.Erasure.Sets[i] = make([]string, setLen)
		for j := range setLen {
			format.Erasure.Sets[i][j] = mustGetUUID()
		}
	}
	return format
}

// Returns format Erasure version after reading `format.json`, returns
// successfully the version only if the backend is Erasure.
func formatGetBackendErasureVersion(b []byte) (string, error) {
	meta := &formatMetaV1{}
	if err := json.Unmarshal(b, meta); err != nil {

    checkArgument(columnIndex != null, "Column %s not in %s", columnKey, columnList);
    return set(rowIndex, columnIndex, value);
  }

  /*
   * TODO(jlevy): Consider creating a merge() method, similar to putAll() but
   * copying non-null values only.
   */

  /**
   * {@inheritDoc}
   *

    awaitTerminationUninterruptibly(executor);
    assertTrue(executor.isTerminated());
    assertInterrupted();
  }

  /**
   * Wrapper around {@link Stopwatch} which also contains an "expected completion time." Creating a
   * {@code Completion} starts the underlying stopwatch.
   */
  private static final class Completion {
    final Stopwatch stopwatch;
    final long expectedCompletionWaitMillis;

		if err != nil || len(contentSHA256) == 0 {
			return ErrContentSHA256Mismatch
		}
	}

	// Verify 'Content-Md5' and/or 'X-Amz-Content-Sha256' if present.
	// The verification happens implicit during reading.
	reader, err := hash.NewReader(ctx, r.Body, -1, clientETag.String(), hex.EncodeToString(contentSHA256), -1)
	if err != nil {
		return toAPIErrorCode(ctx, err)
	}
	r.Body = reader
	return ErrNone
}

   * Double#NEGATIVE_INFINITY} only, the result is {@link Double#NEGATIVE_INFINITY}.
   *
   * <p>If you only want to calculate the mean, use {@link #meanOf} instead of creating a {@link
   * Stats} instance.
   *
   * @throws IllegalStateException if the dataset is empty
   */
  public double mean() {
    checkState(count != 0);
    return mean;
  }

  /**

        }

        eventSpyDispatcher.onEvent(toolchainsRequest);

        slf4jLogger.debug(
                "Reading installation toolchains from '{}'",
                getLocation(toolchainsRequest.getGlobalToolchainsSource(), installationToolchainsFile));
        slf4jLogger.debug(
                "Reading user toolchains from '{}'",
                getLocation(toolchainsRequest.getUserToolchainsSource(), userToolchainsFile));

### 「コンテキストマネージャ」とは { #what-are-context-managers }

「コンテキストマネージャ」とは、`with`文の中で使用できるPythonオブジェクトのことです。

例えば、[ファイルを読み込むには`with`を使用することができます](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files):

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

その後の`open("./somefile.txt")`は「コンテキストマネージャ」と呼ばれるオブジェクトを作成します。

				fmt.Fprintf(h, "part.%d", part.Number)
				fmt.Fprintf(h, "part.%d", part.Size)
			}
			// Previously we checked if we had quorum on DataDir value.
			// We have removed this check to allow reading objects with different DataDir
			// values in a few drives (due to a rebalance-stop race bug)
			// provided their their etags or ModTimes match.

			if !meta.Deleted && meta.Size != 0 {

    @Resource
    private SystemHelper systemHelper;

    /** Fess configuration settings. */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Default constructor for creating a new SearchLogService instance.
     */
    public SearchLogService() {
        // Default constructor
    }

    /**
     * Deletes search logs older than the specified number of days.
     *

    /** Jackson ObjectMapper for JSON serialization/deserialization. */
    protected ObjectMapper mapper = new ObjectMapper();;

    /**
     * Default constructor for creating a new SearchHelper instance.
     */
    public SearchHelper() {
        // Default constructor
    }

    // ===================================================================================