// Resource object has been garbage collected but not closed
                reportLeak(holder);
                activeResources.remove(entry.getKey());
                cleaned++;
            } else if (!holder.closed && holder.getAge() > maxResourceAge * 2) {
                // Very old unclosed resource - attempt to close it
                AutoCloseable resource = holder.resourceRef.get();

                    totalAttemptsBlocked.incrementAndGet();
                    throw new SmbException("Account '" + username + "' is locked out until " + account.getLockoutExpiry());
                } else {
                    // Lockout expired, reset
                    account.reset();
                }
            }
        }

        // Check per-IP limit
        if (sourceIp != null) {

        for (final CharSequence element : elements) {
            if (sb.length() > 0) {
                if (delimiter != null) {
                    sb.append(delimiter);
                } else {
                    sb.append("null");
                }
            }
            sb.append(element);
        }
        return sb.toString();
    }

                }
                bulkBuilder.add((IndexRequestBuilder) builder);
            } else if (builder instanceof UpdateRequestBuilder) {
                if (builderEntityCall != null) {
                    builderEntityCall.callback(builder);
                }
                bulkBuilder.add((UpdateRequestBuilder) builder);
            } else if (builder instanceof DeleteRequestBuilder) {
                if (builderEntityCall != null) {

            if (type == SID_TYPE_DOMAIN) {
                str = domainName;
            } else if (type == SID_TYPE_WKN_GRP || domainName.equals("BUILTIN")) {
                if (type == SID_TYPE_UNKNOWN) {
                    str = toString();
                } else {
                    str = acctName;
                }
            } else {
                str = domainName + "\\" + acctName;
            }

            if (authScheme instanceof FormScheme) {
                formSchemeList.add(new Pair<>((FormScheme) authScheme, authentication.getCredentials()));
            } else {
                final AuthScope authScope = authentication.getAuthScope();
                credentialsProvider.setCredentials(authScope, authentication.getCredentials());

                         not specified. SMB signing may not work propertly.\
                          Skipping DC interrogation.""");
            }
        } else {
            final SmbSession ssn = trans.getSmbSession(NtlmPasswordAuthentication.DEFAULT);
            ssn.getSmbTree(LOGON_SHARE, null).treeConnect(null, null);
        }

        } else {
            SMBUtil.writeInt4(0, buffer, offset + 4);
        }

        // Group SID offset
        if (includeGroup) {
            SMBUtil.writeInt4(currentOffset, buffer, offset + 8);
            prepareSimpleSid(buffer, offset + currentOffset);
            currentOffset += 20; // Simple SID size
        } else {
            SMBUtil.writeInt4(0, buffer, offset + 8);

            builder.setCredentials(NoCredentials.getInstance());
            if (logger.isDebugEnabled()) {
                logger.debug("Using custom GCS endpoint: {}", endpoint);
            }
        } else {
            // Production: use credentials file or default credentials
            if (StringUtil.isNotBlank(credentialsPath)) {
                try (FileInputStream fis = new FileInputStream(credentialsPath)) {

        srcIndex += 2;
        final int address = readInt4(src, srcIndex);
        if (address != 0) {
            addrEntry[addrIndex] = new NbtAddress(recordName, address, groupName, nodeType);
        } else {
            addrEntry[addrIndex] = null;
        }

        return 6;
    }

    @Override
    public String toString() {