Exclusion exclusion1 = new Exclusion();
        exclusion1.setGroupId("*");
        exclusion1.setArtifactId("maven-model");

        Exclusion exclusion2 = new Exclusion();
        exclusion2.setGroupId("org.apache.maven");
        exclusion2.setArtifactId("maven-core");

        ExclusionArtifactFilter filter = new ExclusionArtifactFilter(Arrays.asList(exclusion1, exclusion2));

package org.apache.maven.api;

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

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

    @Nullable
    String getArtifactId();

        </field>
        <field>
          <name>exclusions</name>
          <version>4.0.0+</version>
          <description>Lists a set of artifacts that should be excluded from this dependency's
            artifact list when it comes to calculating transitive dependencies.</description>
          <association>
            <type>Exclusion</type>
            <multiplicity>*</multiplicity>
          </association>

    }

    private static boolean exclusionsEquals(List<Exclusion> a, List<Exclusion> b) {
        if (a.size() != b.size()) {
            return false;
        }

        Iterator<Exclusion> aI = a.iterator();
        Iterator<Exclusion> bI = b.iterator();

        while (aI.hasNext()) {
            Exclusion aD = aI.next();
            Exclusion bD = bI.next();

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

    private Exclusion toExclusion(org.eclipse.aether.graph.Exclusion exclusion) {
        return new Exclusion() {
            @Nullable
            @Override
            public String getGroupId() {
                return exclusion.getGroupId();
            }

                            map(request.getExclusions(), this::toExclusion)));
        }
    }

    private org.eclipse.aether.graph.Exclusion toExclusion(Exclusion exclusion) {
        return new org.eclipse.aether.graph.Exclusion(exclusion.getGroupId(), exclusion.getArtifactId(), "*", "*");
    }

            @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() {
                    @Nullable
                    @Override

import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Tests {@code Exclusion}.
 *
 */
class ExclusionTest {

    @Test
    void testHashCodeNullSafe() {
        new Exclusion().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Exclusion().equals(null));

        new Exclusion().equals(new Exclusion());
    }

    @Test
    void testEqualsIdentity() {

        MavenProject project = session.getCurrentProject();

        Exclusion exclusion = new Exclusion();
        exclusion.setGroupId( "org.apache.maven.its" );
        exclusion.setArtifactId( "a" );

        new ProjectBuilder( project ).addDependency( "org.apache.maven.its", "b", "0.1", Artifact.SCOPE_RUNTIME,
                                                     exclusion );

        Set<Artifact> artifactDependencies =

            return addDependency(groupId, artifactId, version, scope, (Exclusion) null);
        }

        public ProjectBuilder addDependency(
                String groupId, String artifactId, String version, String scope, Exclusion exclusion) {
            return addDependency(groupId, artifactId, version, scope, null, exclusion);
        }

        public ProjectBuilder addDependency(