assertNull(languageHelper.getSupportedLanguage("fr"));
        assertNull(languageHelper.getSupportedLanguage("de"));
        assertNull(languageHelper.getSupportedLanguage("unknown"));
    }

    @Test
    public void test_getSupportedLanguage_blank() {
        assertNull(languageHelper.getSupportedLanguage(null));
        assertNull(languageHelper.getSupportedLanguage(""));

					}
				case testClose:
					err := tw.Close()
					if !equalError(err, tf.wantErr) {
						t.Fatalf("test %d, Close() = %v, want %v", i, err, tf.wantErr)
					}
				default:
					t.Fatalf("test %d, unknown test operation: %T", i, tf)
				}
			}

			if v.file != "" {
				path := v.file
				if v.obscured {
					tf, err := obscuretestdata.DecodeToTempFile(path)
					if err != nil {

                    logger.debug("container was destroyed.");
                }
                return;
            }
            logger.warn("Failed to store failure url: url={}", urlQueue != null ? urlQueue.getUrl() : "unknown", e);
        }

        super.processCrawlingException(objs);
        if (urlQueue != null) {
            ComponentUtil.getCrawlerStatsHelper().record(urlQueue, StatsAction.ACCESS_EXCEPTION);
        }
    }

            for (final String line : lines) {
                if (StringUtil.isNotBlank(line)) {
                    final int pos = line.indexOf('=');
                    if (pos == 0) {
                        paramMap.put("unknown." + (unknownKey + 1), line.substring(pos + 1).trim());
                        unknownKey++;
                    } else if (pos > 0) {
                        final String key = line.substring(0, pos).trim();

            }
            throw new InvalidQueryException(messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY),
                    "Unknown q: " + query.getClass() + " => " + query);
        };
    }

    /**
     * Interface for query processing filters.
     * Filters can modify, validate, or enhance queries before they are executed.
     */

      TYPE_GOAWAY -> readGoAway(handler, length, flags, streamId)
      TYPE_WINDOW_UPDATE -> readWindowUpdate(handler, length, flags, streamId)
      else -> source.skip(length.toLong()) // Implementations MUST discard frames of unknown types.
    }

    return true
  }

  @Throws(IOException::class)
  private fun readHeaders(
    handler: Handler,
    length: Int,
    flags: Int,
    streamId: Int,
  ) {

	ErrPastObjectLockRetainDate = errors.New("the retain until date must be in the future")
	// ErrUnknownWORMModeDirective - indicates that the retention mode is invalid
	ErrUnknownWORMModeDirective = errors.New("unknown WORM mode directive")
	// ErrObjectLockMissingContentMD5 - indicates missing Content-MD5 header for put object requests with locking

	case bucketMetadataFormat:
	default:
		return b, fmt.Errorf("loadBucketMetadata: unknown format: %d", binary.LittleEndian.Uint16(data[0:2]))
	}
	switch binary.LittleEndian.Uint16(data[2:4]) {
	case bucketMetadataVersion:
	default:
		return b, fmt.Errorf("loadBucketMetadata: unknown version: %d", binary.LittleEndian.Uint16(data[2:4]))
	}
	_, err = b.UnmarshalMsg(data[4:])
	return b, err
}

    /**
     * SID type indicating an unknown account type.
     */
    public static final int SID_TYPE_UNKNOWN = lsarpc.SID_NAME_UNKNOWN;

    static final String[] SID_TYPE_NAMES =
            { "0", "User", "Domain group", "Domain", "Local group", "Builtin group", "Deleted", "Invalid", "Unknown" };

    /**
     * Flag indicating that SIDs should be resolved to names.
     */

				replicateObject(p.ctx, v, p.objLayer)
				atomic.AddInt32(&p.activeMRFWorkers, -1)
				p.stats.decQ(v.Bucket, v.Size, v.DeleteMarker, v.OpType)

			default:
				bugLogIf(p.ctx, fmt.Errorf("unknown mrf replication type: %T", oi), "unknown-mrf-replicate-type")
			}
		case <-p.mrfWorkerKillCh:
			return
		}
	}
}

// AddWorker adds a replication worker to the pool.