private Set<N> predecessorsOrEmpty(N node) {
    if (edgeType == EdgeType.INCOMING || edgeType == EdgeType.BOTH) {
      return graph.predecessors(node);
    } else {
      return ImmutableSet.of();
    }
  }

  /**
   * Returns the successors of the given node, or an empty set if this set does not represent
   * outgoing edges.
   */
  private Set<N> successorsOrEmpty(N node) {

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        assertTrue(set.size() == 3, "Set size should be 3, is " + set.size());

        for (Object aSet : set) {
            Artifact artifact = (Artifact) aSet;

    testers.add(MultisetIteratorTester.class);
    testers.add(MultisetSerializationTester.class);
    return testers;
  }

  private static Set<Feature<?>> computeEntrySetFeatures(Set<Feature<?>> features) {
    Set<Feature<?>> derivedFeatures = new HashSet<>(features);
    derivedFeatures.remove(CollectionFeature.GENERAL_PURPOSE);
    derivedFeatures.remove(CollectionFeature.SUPPORTS_ADD);

type cleanEntitiesQuery struct {
	Users    map[string]set.StringSet
	Groups   set.StringSet
	Policies set.StringSet
}

// createCleanEntitiesQuery - maps users to their groups and normalizes user or group DNs if ldap.
func (sys *IAMSys) createCleanEntitiesQuery(q madmin.PolicyEntitiesQuery, ldap bool) cleanEntitiesQuery {
	cleanQ := cleanEntitiesQuery{
		Users:    make(map[string]set.StringSet),
		Groups:   set.CreateStringSet(q.Groups...),

    assertThat(get1.requestLine).isEqualTo("GET http://android.com/foo HTTP/1.1")
    assertThat(get1.headers["Proxy-Authorization"]).isNull()
    val get2 = server.takeRequest()
    assertThat(get2.requestLine).isEqualTo("GET http://android.com/foo HTTP/1.1")
    assertThat(get2.headers["Proxy-Authorization"]).isEqualTo("password")
  }

  /**

      Set<Feature<?>> multimapFeatures) {
    Set<Feature<?>> derivedFeatures = copyToSet(multimapFeatures);
    derivedFeatures.remove(CollectionFeature.SERIALIZABLE);
    derivedFeatures.remove(CollectionFeature.SERIALIZABLE_INCLUDING_VIEWS);
    return derivedFeatures;
  }

  private static Set<Feature<?>> computeAsMapFeatures(Set<Feature<?>> multimapFeatures) {
    Set<Feature<?>> derivedFeatures = copyToSet(multimapFeatures);

                            new UpgradeResult(Set.of(Paths.get("pom.xml")), Set.of(Paths.get("pom.xml")), Set.of()));

            when(mockStrategies.get(1).isApplicable(context)).thenReturn(true);
            when(mockStrategies.get(1).apply(Mockito.eq(context), Mockito.any()))
                    .thenReturn(new UpgradeResult(
                            Set.of(Paths.get("module/pom.xml")), Set.of(Paths.get("module/pom.xml")), Set.of()));

    testers.add(MultisetIteratorTester.class);
    testers.add(MultisetSerializationTester.class);
    return testers;
  }

  private static Set<Feature<?>> computeEntrySetFeatures(Set<Feature<?>> features) {
    Set<Feature<?>> derivedFeatures = new HashSet<>(features);
    derivedFeatures.remove(CollectionFeature.GENERAL_PURPOSE);
    derivedFeatures.remove(CollectionFeature.SUPPORTS_ADD);

			t.Fatalf("test %v: result: expected: %v, got: %v", i+1, testCase.set, result)
		}

		result.add(testCase.targetIDToAdd)
		if reflect.DeepEqual(result, testCase.set) {
			t.Fatalf("test %v: result: expected: not equal, got: equal", i+1)
		}
	}
}

func TestTargetIDSetUnion(t *testing.T) {
	testCases := []struct {
		set            TargetIDSet
		setToAdd       TargetIDSet
		expectedResult TargetIDSet
	}{

import java.util.Collections;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * Encapsulates the constraints that a class under test must satisfy in order for a tester method to
 * be run against that class.
 *
 * @author George van den Driessche
 */
@GwtCompatible
public final class TesterRequirements {
  private final Set<Feature<?>> presentFeatures;
  private final Set<Feature<?>> absentFeatures;