for (int i = 0; i < equalityGroup.length; i++) {
      Object element = equalityGroup[i];
      if (element == null) {
        throw new NullPointerException("at index " + i);
      }
      list.add(element);
    }
    equalityGroups.add(list);
    return this;
  }

  /** Run tests on equals method, throwing a failure on an invalid test */
  @CanIgnoreReturnValue
  public EqualsTester testEquals() {

        final String addr = prp.getProperty(key);
        if (addr != null) {
            try {
                def = InetAddress.getByName(addr);
            } catch (final UnknownHostException uhe) {
                if (LogStream.level > 0) {
                    log.println(addr);
                    uhe.printStackTrace(log);
                }
            }

	}
	if _, ok := metadata[MetaDataEncryptionKey]; ok {
		return nil, true
	}
	if _, ok := metadata[MetaContext]; ok {
		return nil, true
	}
	return nil, false
}

// CreateMultipartMetadata adds the multipart flag entry to metadata
// and returns modified metadata. It allocates a new metadata map if
// metadata is nil.
func CreateMultipartMetadata(metadata map[string]string) map[string]string {
	if metadata == nil {

	}

	return res
}

// AddSystemTarget adds a new logger target to the
// list of enabled loggers
func AddSystemTarget(ctx context.Context, t Target) error {
	if err := t.Init(ctx); err != nil {
		return err
	}

	if consoleTgt == nil {
		if t.Type() == types.TargetConsole {
			consoleTgt = t
		}
	}

	systemTargets.add(t)
	return nil
}

        User u = user;
        for (final AuthenticationChain chain : chains) {
            u = chain.load(u);
        }
        return u;
    }

    /**
     * Adds an authentication chain to the manager.
     * @param chain The authentication chain to add.
     */
    public void addChain(final AuthenticationChain chain) {
        chains = ArrayUtils.addAll(chains, chain);
    }

    /**

		p.errorf("%s: expected register; found %s", op, obj.Dconv(prog, addr))
	}
	return addr.Reg
}

// getSpecial checks that addr represents a special operand and returns its value.
func (p *Parser) getSpecial(prog *obj.Prog, op obj.As, addr *obj.Addr) int64 {
	if addr.Type != obj.TYPE_SPECIAL || addr.Name != 0 || addr.Reg != 0 || addr.Index != 0 {

            }
        }
        return embeddedFile;
    }

    /**
     * Extracts metadata from the PDF document and adds it to the extraction result.
     * @param document the PDF document
     * @param extractData the extraction data to add metadata to
     */
    protected void extractMetadata(final PDDocument document, final ExtractData extractData) {

            return this;
        }

        /**
         * Adds a document to the search result.
         *
         * @param doc The document to add to the result list
         * @return This builder instance for method chaining
         */
        public SearchResultBuilder addDocument(final Map<String, Object> doc) {
            documentList.add(doc);
            return this;
        }

        /**

	if objAPI == nil {
		return errServerNotInitialized
	}

	if err := evnot.targetList.Add(globalNotifyTargetList.Targets()...); err != nil {
		return err
	}
	evnot.targetList = evnot.targetList.Init(runtime.GOMAXPROCS(0)) // TODO: make this configurable (y4m4)
	return nil
}

// AddRulesMap - adds rules map for bucket name.
func (evnot *EventNotifier) AddRulesMap(bucketName string, rulesMap event.RulesMap) {

        val equalsOffset = indexOf('=', pos)
        if (equalsOffset == -1 || equalsOffset > ampersandOffset) {
          result.add(substring(pos, ampersandOffset))
          result.add(null) // No value for this name.
        } else {
          result.add(substring(pos, equalsOffset))
          result.add(substring(equalsOffset + 1, ampersandOffset))
        }
        pos = ampersandOffset + 1
      }
      return result