authInfo.setPassphrase(server.getPassphrase());

                            return authInfo;
                        }
                    }
                }
            }
        }

        // empty one to prevent NPE
        return new AuthenticationInfo();
    }

    @Override
    public ProxyInfo getProxy(String protocol) {

     * {@link RemoteRepository#getUrl()} root.
     *
     * @return the string if operation succeeded, {@code null} if source does not exist.
     * @throws RuntimeException If failed (and not due source not exists).
     */
    @Nonnull
    default Optional<String> getString(@Nonnull URI relativeSource) {
        return getString(relativeSource, StandardCharsets.UTF_8);
    }

    /**

            public Class<? extends Annotation> annotationType() {
                return UriType.class;
            }

            @Override
            public ProtocolType protocolType() {
                return ProtocolType.WEB;
            }

            @Override
            public String message() {
                return "Test message";
            }

            @Override

   * @param string the string to test and possibly return
   * @return {@code string} itself if it is non-null; {@code ""} if it is null
   */
  public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**
   * Returns the given string if it is nonempty; {@code null} otherwise.
   *
   * @param string the string to test and possibly return

     *
     * @return the binding
     */
    public DcerpcBinding getBinding() {
        return this.binding;
    }

    /**
     * @return the max_recv
     */
    int getMaxRecv() {
        return this.max_recv;
    }

    /**
     * @return the max_xmit
     */
    int getMaxXmit() {
        return this.max_xmit;
    }

    /**

        if (edges == null || edges.isEmpty()) {
            return null;
        }

        if (edges.size() == 1) {
            MetadataGraphEdge e = edges.get(0);
            if (scope.encloses(e.getScope())) {
                return e;
            }

            return null;
        }

        MetadataGraphEdge res = null;

		}
		writeErrorResponse(ctx, w, apiErr, r.URL)
		return
	}

	configData, err := xml.Marshal(config)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	if _, err = globalBucketMetadataSys.Update(ctx, bucketName, bucketNotificationConfig, configData); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	rulesMap := config.ToRulesMap()

    //                                                                             =======
    @Override
    public DuplicateHostDbm asDBMeta() {
        return DuplicateHostDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "duplicate_host";
    }

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

    //                                                                             =======
    @Override
    public RelatedQueryDbm asDBMeta() {
        return RelatedQueryDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "related_query";
    }

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

    //                                                                             =======
    @Override
    public RequestHeaderDbm asDBMeta() {
        return RequestHeaderDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "request_header";
    }

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