// Poll should return the item
        final OpenSearchUrlQueue polled = urlQueueService.poll(sessionId);
        assertNotNull(polled);
        assertEquals("http://www.example.com/page1", polled.getUrl());
        assertEquals(sessionId, polled.getSessionId());

        // Second poll should return null (queue is empty)
        final OpenSearchUrlQueue polled2 = urlQueueService.poll(sessionId);

 * implementation for the {@link #get(Object)} and {@link #getIfPresent} methods. {@link
 * #getUnchecked}, {@link #get(Object, Callable)}, and {@link #getAll} are implemented in terms of
 * {@code get}; {@link #getAllPresent} is implemented in terms of {@code getIfPresent}; {@link
 * #putAll} is implemented in terms of {@link #put}, {@link #invalidateAll(Iterable)} is implemented

        String src = source.getUrl();
        if (src != null) {
            if (sourceDominant) {
                target.setUrl(src);
                target.setLocation("url", source.getLocation("url"));
            } else if (target.getUrl() == null) {
                target.setUrl(extrapolateChildUrl(src, source.isChildProjectUrlInheritAppendPath(), context));

        final ResponseData responseData = new ResponseData();

        responseData.setUrl("http://example.com/document.pdf");
        assertEquals("http://example.com/document.pdf", responseData.getUrl());

        responseData.setMimeType("application/pdf");
        assertEquals("application/pdf", responseData.getMimeType());

        responseData.setCharSet("UTF-8");

     */
    String getName();

    /**
     * Gets the full URL of the artifact.
     *
     * @return The full URL of the artifact, never {@code null}.
     */
    String getUrl();

    /**
     * The size of the artifact in bytes.
     *
     * @return The of the artifact in bytes or a negative value if unknown.
     */
    long getContentLength();

    /**

        assertNotSame(pipe1, pipe2, "Different pipes should be different instances");

        assertTrue(resource1.getLocator().getURL().toString().contains("server1"), "First resource should contain server1");
        assertTrue(resource2.getLocator().getURL().toString().contains("server2"), "Second resource should contain server2");
    }

 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface XmlReaderRequest {

    @Nullable
    Path getPath();

    @Nullable
    Path getRootDirectory();

    @Nullable
    URL getURL();

    @Nullable
    InputStream getInputStream();

    @Nullable
    Reader getReader();

    @Nullable
    Transformer getTransformer();

    boolean isStrict();

    @Nullable

        asDocMeta().version(version);
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getUrl();
    }

    public LocalDateTime getRequestedAt() {
        return getCreatedAt();
    }

    @Override
    public Map<String, Object> toSource() {

        // Verify we can retrieve it
        DfsReferralData received = loc.getDfsReferral();
        assertSame(dfs, received);

        // Verify that the URL returned by getURL works with SMB handler
        URL returned = loc.getURL();
        if (returned != null) {
            assertEquals(url, returned.toString());
        }

        // Test that getAddress returns null for our dummy implementation

    return delegate().getUnchecked(key);
  }

  @CanIgnoreReturnValue // TODO(b/27479612): consider removing this
  @Override
  public ImmutableMap<K, V> getAll(Iterable<? extends K> keys) throws ExecutionException {
    return delegate().getAll(keys);
  }

  @Override
  public V apply(K key) {
    return delegate().apply(key);
  }

  @GwtIncompatible
  @J2ktIncompatible
  @Override