*/
    @Nonnull
    Optional<Options> options();

    /**
     * This method returns "verbose" option value derived from multiple places: CLI options, but also CI detection,
     * if applicable.
     */
    default boolean effectiveVerbose() {
        return options().isPresent() && options().orElseThrow().verbose().orElse(false)

(such as [`os.ModeDir`](/pkg/os#ModeDir)) do not have the `ModeIrregular` bit set.

Go 1.23 changed [`os.Readlink`](/pkg/os#Readlink) and [`filepath.EvalSymlinks`](/pkg/path/filepath#EvalSymlinks)
to avoid trying to normalize volumes to drive letters, which was not always even possible.
This behavior is controlled by the `winreadlinkvolume` setting.
For Go 1.23, it defaults to `winreadlinkvolume=1`.
Previous versions default to `winreadlinkvolume=0`.

     */
    public RankFusionSearcher() {
        // Default constructor - name will be initialized lazily
    }

    /**
     * Returns the name of this searcher.
     * The name is derived from the class name by converting it to lowercase
     * and removing the "Searcher" suffix.
     *
     * @return the searcher name
     */
    public String getName() {
        if (name == null) {

          parentBuilder) {
    // TODO: Once invariant support is added, supply invariants to each of the
    // derived suites, to check that mutations to the derived collections are
    // reflected in the underlying map.

    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

    }

    return derivedSuites;
  }

  /**
   * Creates a suite whose set has some elements filtered out of view.
   *
   * <p>Because the set may be ascending or descending, this test must derive the relative order of
   * these extreme values rather than relying on their regular sort ordering.
   */
  final TestSuite createSubsetSuite(

    }

    return derivedSuites;
  }

  /**
   * Creates a suite whose set has some elements filtered out of view.
   *
   * <p>Because the set may be ascending or descending, this test must derive the relative order of
   * these extreme values rather than relying on their regular sort ordering.
   */
  final TestSuite createSubsetSuite(

import java.util.List;
import java.util.Map.Entry;
import java.util.SortedMap;
import org.jspecify.annotations.NullMarked;

/**
 * Generators of sorted maps and derived collections.
 *
 * @author Kevin Bourrillion
 * @author Jesse Wilson
 * @author Jared Levy
 * @author Hayward Chan
 * @author Chris Povirk
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked

    NavigableSet<E> empty = navigableSet.subSet(e0(), false, e0(), false);
    assertEquals(new TreeSet<E>(), empty);
  }

  /*
   * TODO(cpovirk): more testing of subSet/headSet/tailSet/descendingSet? and/or generate derived
   * suites?
   */

  /**
   * Returns the {@link Method} instances for the test methods in this class that create a set with

	var wg sync.WaitGroup
	wg.Add(1)
	var listErr error

	go func(o listPathOptions) {
		defer wg.Done()
		if o.Lifecycle == nil {
			// No filtering ahead, ask drives to stop
			// listing exactly at a specific limit.
			o.StopDiskAtLimit = true
		}
		listErr = z.listMerged(listCtx, o, filterCh)
		o.debugln("listMerged returned with", listErr)
	}(*o)

        V41,

        /**
         * Validation for Maven 4.2 POM format.
         */
        V42
    }

    /**
     * Gets the identifier of the model from which the problem originated. The identifier is derived from the
     * information that is available at the point the problem occurs and as such merely serves as best effort
     * to provide information to the user to track the problem back to its origin.
     *