*/
    protected static class DuplicateMerger extends MavenModelMerger {

        public Plugin mergePlugin(Plugin target, Plugin source) {
            return super.mergePlugin(target, source, false, Collections.emptyMap());
        }
    }

    @Override
    public Model injectDefaultValues(Model model, ModelBuildingRequest request, ModelProblemCollector problems) {
        Model.Builder builder = Model.newBuilder(model);

        }

        @Override
        public Map<Range<Comparable<?>>, Object> asMapOfRanges() {
          return emptyMap();
        }

        @Override
        public Map<Range<Comparable<?>>, Object> asDescendingMapOfRanges() {
          return emptyMap();
        }

        @Override
        public RangeMap<Comparable<?>, Object> subRangeMap(Range<Comparable<?>> range) {

import static com.google.common.collect.testing.Helpers.mapEntry;
import static com.google.common.collect.testing.ReflectionFreeAssertThrows.assertThrows;
import static java.util.Arrays.asList;
import static java.util.Collections.emptyMap;
import static java.util.Collections.emptySet;
import static java.util.Collections.singleton;
import static java.util.Collections.singletonMap;

import com.google.common.annotations.GwtCompatible;

            task.getInputs().property("systemProperties", Collections.emptyMap());
            // TODO: This breaks the provider
            task.systemProperty("org.gradle.docs.releasenotes.rendered", extension.getReleaseNotes().getRenderedDocumentation().get().getAsFile());
        });
    }

            throws ArtifactResolutionException, ArtifactNotFoundException {
        return resolveTransitively(
                artifacts,
                originatingArtifact,
                Collections.emptyMap(),
                localRepository,
                remoteRepositories,
                source,
                filter);
    }

    public ArtifactResolutionResult resolveTransitively(

                    .map { dirPath.relativize(it).toString() }
                    .collect(Collectors.toList())
            }
        }?.filter {
            it.value.isNotEmpty()
        } ?: emptyMap()

    /**
     * Returns any temporary directories used to extract resources from jars.
     *

      new ImmutableSortedMap<>(
          ImmutableSortedSet.emptySet(Ordering.natural()), ImmutableList.<Object>of());

  static <K, V> ImmutableSortedMap<K, V> emptyMap(Comparator<? super K> comparator) {
    if (Ordering.natural().equals(comparator)) {
      return of();
    } else {
      return new ImmutableSortedMap<>(

        }

        final Map<String, String> configMap = configParameterMap.get(name);
        if (configMap == null) {
            return Collections.emptyMap();
        }
        return configMap;
    }

    @Override
    public String getId() {
        return asDocMeta().id();
    }

    public void setId(final String id) {

    /* Map must have at least one entry if not an EnumHashBiMap. */
    assertThrows(
        IllegalArgumentException.class,
        () -> EnumHashBiMap.create(Collections.<Currency, String>emptyMap()));

    /* Map can be empty if it's an EnumHashBiMap. */
    Map<Currency, String> emptyBimap = EnumHashBiMap.create(Currency.class);
    bimap = EnumHashBiMap.create(emptyBimap);
    assertTrue(bimap.isEmpty());

    )
}

fun determineScenarioTestDurations(os: Os, performanceTestDurations: OperatingSystemToTestProjectPerformanceTestDurations): Map<String, List<PerformanceTestDuration>> = performanceTestDurations.getOrDefault(os, emptyMap())

fun determineScenariosFor(performanceTestSpec: PerformanceTestSpec, performanceTestConfigurations: List<PerformanceTestConfiguration>): List<PerformanceScenario> {