// If the offset is non-sensible, then this uses an offset of zero.
func timeZone(offset time.Duration) *time.Location {
	const (
		minOffset   = -12 * time.Hour  // E.g., Baker island at -12:00
		maxOffset   = +14 * time.Hour  // E.g., Line island at +14:00
		offsetAlias = 15 * time.Minute // E.g., Nepal at +5:45
	)
	offset = offset.Round(offsetAlias)
	if offset < minOffset || maxOffset < offset {
		offset = 0
	}

        } else {
            return "";
        }
    }

    private String checkAtLeastOneExists(String message, Stream<? extends Class<?>> stream) {
        if (stream.findAny().isPresent()) {
            return "";
        } else {
            return "Expected at least one " + message + ", but found none.";
        }
    }

    private boolean seemsLikeATest(Class<?> clazz) {

    }

    @Override
    public Optional<Lifecycle> lookup(String id) {
        return stream().filter(lf -> Objects.equals(id, lf.id())).findAny();
    }

    @Override
    public List<String> computePhases(Lifecycle lifecycle) {
        Graph graph = new Graph();
        addPhases(graph, null, null, lifecycle.v3phases());

   * iterable is empty, {@code Optional.absent()} is returned.
   *
   * <p><b>{@code Stream} equivalent:</b> if the goal is to obtain any element, {@link
   * Stream#findAny}; if it must specifically be the <i>first</i> element, {@code Stream#findFirst}.
   *
   * @throws NullPointerException if the first element is null; if this is a possibility, use {@code

   * iterable is empty, {@code Optional.absent()} is returned.
   *
   * <p><b>{@code Stream} equivalent:</b> if the goal is to obtain any element, {@link
   * Stream#findAny}; if it must specifically be the <i>first</i> element, {@code Stream#findFirst}.
   *
   * @throws NullPointerException if the first element is null; if this is a possibility, use {@code

 * round-trip between the two should be assumed to be lossy.
 *
 * <p>See the Guava User Guide article on <a
 * href="https://github.com/google/guava/wiki/StringsExplained#splitter">{@code Splitter}</a>.
 *
 * @author Julien Silland
 * @author Jesse Wilson
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 * @since 1.0
 */
@GwtCompatible
public final class Splitter {
  private final CharMatcher trimmer;

 * round-trip between the two should be assumed to be lossy.
 *
 * <p>See the Guava User Guide article on <a
 * href="https://github.com/google/guava/wiki/StringsExplained#splitter">{@code Splitter}</a>.
 *
 * @author Julien Silland
 * @author Jesse Wilson
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 * @since 1.0
 */
@GwtCompatible
public final class Splitter {
  private final CharMatcher trimmer;

import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;

/**
 * @author Julien Silland
 */
@NullMarked
@GwtCompatible
public class SplitterTest extends TestCase {

  private static final Splitter COMMA_SPLITTER = Splitter.on(',');

  @SuppressWarnings("nullness") // test of a bogus call

   * href="http://gee.cs.oswego.edu/dl/html/StreamParallelGuidance.html">efficiently splittable</a>
   * streams.
   *
   * <p>If the stream has nondeterministic order, this has equivalent semantics to {@link
   * Stream#findAny} (which you might as well use).
   *
   * @see Stream#findFirst()
   * @throws NullPointerException if the last element of the stream is null
   */
  /*

   * iterator whether it has any elements <i>remaining</i> (which one does using {@link
   * Iterator#hasNext}).
   *
   * <p><b>{@code Stream} equivalent:</b> {@code !stream.findAny().isPresent()}
   *
   * @return {@code true} if the iterable contains no elements
   */
  public static boolean isEmpty(Iterable<?> iterable) {
    if (iterable instanceof Collection) {