&& Objects.equals(aD.getClassifier(), bD.getClassifier()) //
                    && Objects.equals(aD.getScope(), bD.getScope());

            r &= exclusionsEquals(aD.getExclusions(), bD.getExclusions());

            if (!r) {
                return false;
            }
        }

        return true;
    }

        ArtifactFilter effectiveFilter = inheritedFilter;

        if (!dependency.getExclusions().isEmpty()) {
            effectiveFilter = new ExclusionArtifactFilter(dependency.getExclusions());

            if (inheritedFilter != null) {
                effectiveFilter = new AndArtifactFilter(Arrays.asList(inheritedFilter, effectiveFilter));
            }

                Dependency target, Dependency source, boolean sourceDominant, Map<Object, Object> context) {
            List<Exclusion> tgt = target.getExclusions();
            if (tgt.isEmpty()) {
                List<Exclusion> src = source.getExclusions();

                for (Exclusion element : src) {
                    Exclusion clone = element.clone();
                    target.addExclusion(clone);

        assertEquals("compile", dep1.getScope());
        assertFalse(dep1.isOptional(), "Expected " + dep1 + ".isOptional() to return false");
        assertEquals(0, dep1.getExclusions().size());
        Artifact depArtifact = dep1.getArtifact();
        assertEquals("ut.simple", depArtifact.getGroupId());
        assertEquals("dependency", depArtifact.getArtifactId());

                    }
                    if (dependency.getExclusions().isEmpty()
                            && !managedDependency.getExclusions().isEmpty()) {
                        dependency = dependency.withExclusions(managedDependency.getExclusions());
                    }
                }
                return dependency;
            });

        List<String> exclusions = new ArrayList<String>();

        for ( Dependency d : project.getDependencies() )
        {
            if ( d.getExclusions() != null )
            {
                for ( Exclusion e : d.getExclusions() )
                {
                    exclusions.add(  e.getGroupId() + ":" + e.getArtifactId() );
                }
            }
        }

                return dependency.isOptional();
            }

            @Nonnull
            @Override
            public Collection<Exclusion> getExclusions() {
                return new MappedCollection<>(dependency.getExclusions(), this::toExclusion);
            }

            private Exclusion toExclusion(org.apache.maven.api.model.Exclusion exclusion) {
                return new Exclusion() {

                dependency.getVersion(),
                props,
                stereotype);

        List<Exclusion> exclusions = new ArrayList<>(dependency.getExclusions().size());
        for (org.apache.maven.model.Exclusion exclusion : dependency.getExclusions()) {
            exclusions.add(convert(exclusion));
        }

        return new Dependency(
                artifact,
                dependency.getScope(),

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nullable;

/**
 * A dependency exclusion.
 *
 * @since 4.0.0
 * @see DependencyCoordinates#getExclusions()
 */
@Experimental
public interface Exclusion {
    @Nullable
    String getGroupId();

    @Nullable
    String getArtifactId();

@Experimental
@Immutable
public interface DependencyCoordinatesFactoryRequest extends ArtifactCoordinatesFactoryRequest {

    String getScope();

    boolean isOptional();

    @Nonnull
    Collection<Exclusion> getExclusions();

    @Nonnull
    static DependencyCoordinatesFactoryRequest build(
            @Nonnull Session session,
            String groupId,
            String artifactId,
            String version,