try {
      return Thread.class.getConstructor(
          ThreadGroup.class, Runnable.class, String.class, long.class, boolean.class);
    } catch (Throwable t) {
      // Probably pre Java 9. We'll fall back to Thread.inheritableThreadLocals.
      return null;
    }
  }

  private static boolean isAndroid() {
    return requireNonNull(System.getProperty("java.runtime.name", "")).contains("Android");
  }

   *
   * @return the fully constructed {@link ThreadFactory}
   */
  public ThreadFactory build() {
    return doBuild(this);
  }

  // Split out so that the anonymous ThreadFactory can't contain a reference back to the builder.
  // At least, I assume that's why. TODO(cpovirk): Check, and maybe add a test for this.
  @SuppressWarnings("ThreadPriorityCheck") // We only propagate user requests (which we discourage).

import java.util.NavigableMap;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.TreeMap;
import org.jspecify.annotations.Nullable;

/**
 * An implementation of {@link RangeSet} backed by a {@link TreeMap}.
 *
 * @author Louis Wasserman
 * @since 14.0
 */
@GwtIncompatible // uses NavigableMap
public class TreeRangeSet<C extends Comparable<?>> extends AbstractRangeSet<C>
    implements Serializable {

        assertFalse(testImplementation.isResolveInDfs());

        // Toggle to true
        testImplementation.setResolveInDfs(true);
        assertTrue(testImplementation.isResolveInDfs());

        // Toggle back to false
        testImplementation.setResolveInDfs(false);
        assertFalse(testImplementation.isResolveInDfs());

        // Multiple toggles
        for (int i = 0; i < 10; i++) {

     * @param form the search form containing current search parameters
     * @return HTML response for the failure URL list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse back(final SearchForm form) {
        return asHtml(path_AdminFailureurl_AdminFailureurlJsp).renderWith(data -> {
            searchPaging(data, form);
        });
    }

    /**

     * Returns to the job log list page.
     *
     * @param form the search form
     * @return HTML response for the list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse back(final SearchForm form) {
        saveToken();
        return asHtml(path_AdminJoblog_AdminJoblogJsp).renderWith(data -> {
            searchPaging(data, form);
        });
    }

    /**

   * Multimap#asMap()} will iterate through the keys in the order that they were first added to the
   * multimap, save that if all values associated with a key are removed and then the key is added
   * back into the multimap, that key will come last in the key iteration order.
   */
  public static MultimapBuilderWithKeys<@Nullable Object> linkedHashKeys() {
    return linkedHashKeys(DEFAULT_EXPECTED_KEYS);
  }

  /**

   * Multimap#asMap()} will iterate through the keys in the order that they were first added to the
   * multimap, save that if all values associated with a key are removed and then the key is added
   * back into the multimap, that key will come last in the key iteration order.
   */
  public static MultimapBuilderWithKeys<@Nullable Object> linkedHashKeys() {
    return linkedHashKeys(DEFAULT_EXPECTED_KEYS);
  }

  /**

 *     Ordering.natural()
 *         .nullsFirst()
 *         .onResultOf(getBarFunction)
 *         .nullsLast();
 * }
 *
 * Note that each chaining method returns a new ordering instance which is backed by the previous
 * instance, but has the chance to act on values <i>before</i> handing off to that backing instance.
 * As a result, it usually helps to read chained ordering expressions <i>backwards</i>. For example,

    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedUntilPong3).toDouble())
      .isCloseTo(1500.0, 250.0)

    // The client pinged the server 3 times, and it has ponged back 3 times.
    assertThat(webSocket.sentPingCount()).isEqualTo(3)
    assertThat(server.receivedPingCount()).isEqualTo(3)
    assertThat(webSocket.receivedPongCount()).isEqualTo(3)