*
   * @throws NullPointerException if the last element is null; if this is a possibility, use {@link
   *     Iterables#getLast} instead.
   */
  @SuppressWarnings("nullness") // Unsafe, but we can't do much about it now.
  public final Optional<@NonNull E> last() {
    // Iterables#getLast was inlined here so we don't have to throw/catch a NSEE

    // TODO(kevinb): Support a concurrently modified collection?

    protected Object parsePrimitive(final JsonParser jsonParser) throws IOException {
        final JsonToken token = jsonParser.getCurrentToken();
        return switch (token) {
        case VALUE_STRING -> jsonParser.getText();
        case VALUE_NUMBER_INT -> jsonParser.getLongValue();
        case VALUE_NUMBER_FLOAT -> jsonParser.getDoubleValue();
        case VALUE_TRUE -> true;
        case VALUE_FALSE -> false;

// Java 21 Sequenced Collections support
SequencedCollection<String> sequenced = CollectionsUtil.newLinkedHashSet();
String first = CollectionsUtil.getFirst(sequenced);
String last = CollectionsUtil.getLast(sequenced);
SequencedCollection<String> reversed = CollectionsUtil.reversed(sequenced);

// Specialized collections
LruHashMap<String, Object> lruCache = new LruHashMap<>(100); // LRU cache with max 100 entries

            proxySelector.add(
                    new org.eclipse.aether.repository.Proxy(
                            proxy.getProtocol(), proxy.getHost(), proxy.getPort(), authBuilder.build()),
                    proxy.getNonProxyHosts());
        }
        sessionBuilder.setProxySelector(proxySelector);

crawler.awaitTermination();
System.out.println("Crawling completed");
```

### Custom Content Extractor

```java
public class CustomExtractor extends AbstractExtractor {
    @Override
    public ExtractData getText(final InputStream inputStream, final Map<String, String> params) {
        // Custom extraction logic
        ExtractData extractData = new ExtractData();
        // ... implementation
        return extractData;
    }

                n++;
                final int size = chain.size();
                final int cost = chain.getCreditCost();
                final CommonServerMessageBlockRequest next = chain.getNext();
                if (log.isTraceEnabled()) {
                    log.trace(String.format("%s costs %d avail %d (%s)", chain.getClass().getName(), cost, this.credits.availablePermits(),
                            this.name));

        logger.info("Started {}", IMAGE_NAME);

        String bucketName = "fess";
        Integer mappedPort = gcsServer.getFirstMappedPort();
        String endpoint = String.format("http://%s:%s", gcsServer.getHost(), mappedPort);
        logger.info("endpoint: {}", endpoint);

        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("mimeTypeHelper", MimeTypeHelperImpl.class)//

        final byte[] e8 = new byte[8];

        for (int i = 0; i < key.length / 7; i++) {
            System.arraycopy(key, i * 7, key7, 0, 7);
            final Cipher des = Crypto.getDES(key7);
            des.update(data, 0, data.length, e8);
            System.arraycopy(e8, 0, e, i * 8, 8);
        }
    }

        this.overrideTimeout = overrideTimeout;
    }

    /**
     *
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#getNext()
     */
    @Override
    public ServerMessageBlock getNext() {
        return null;
    }

    /**
     * {@inheritDoc}
     *

public void execute() throws Exception; protected void expandFile(java.io.File, java.io.File) throws Exception; protected void extractFile(java.io.File, java.io.File, java.io.InputStream, String, java.util.Date, boolean) throws Exception; public void setDest(java.io.File); public void setSrc(java.io.File); public void setOverwrite(boolean); public java.io.File resolveFile(java.io.File, String); public java.io.File normalize(String); } org/codehaus/plexus/util/FastMap$1.class package org.codehaus.plexus.util;...