@Override
    public List<org.eclipse.aether.graph.Dependency> toDependencies(
            Collection<DependencyCoordinate> dependencies, boolean managed) {
        return dependencies == null ? null : map(dependencies, d -> toDependency(d, managed));
    }

    @Override
    public abstract org.eclipse.aether.graph.Dependency toDependency(DependencyCoordinate dependency, boolean managed);

    @Override

        return result;
    }

    static Dependency toDependency(MavenProject mavenProject) {
        final Dependency dependency = new Dependency();
        dependency.setArtifactId(mavenProject.getArtifactId());
        dependency.setGroupId(mavenProject.getGroupId());
        dependency.setVersion(mavenProject.getVersion());
        return dependency;
    }

    List<org.eclipse.aether.graph.Dependency> toDependencies(
            Collection<DependencyCoordinate> dependencies, boolean managed);

    org.eclipse.aether.graph.Dependency toDependency(DependencyCoordinate dependency, boolean managed);

    List<org.eclipse.aether.artifact.Artifact> toArtifacts(Collection<Artifact> artifacts);

                    Object key = getDependencyKey().apply(managedDependency);
                    Dependency dependency = dependencies.get(key);
                    if (dependency != null) {
                        Dependency merged = mergeDependency(dependency, managedDependency, false, context);
                        if (merged != dependency) {

public class DefaultDependency implements Dependency {

    private final InternalSession session;
    private final org.eclipse.aether.graph.Dependency dependency;
    private final String key;

    public DefaultDependency(
            @Nonnull InternalSession session, @Nonnull org.eclipse.aether.graph.Dependency dependency) {
        this.session = nonNull(session, "session");
        this.dependency = nonNull(dependency, "dependency");

    org.eclipse.aether.repository.LocalRepository toRepository(LocalRepository repository);

    List<org.eclipse.aether.graph.Dependency> toDependencies(
            Collection<DependencyCoordinate> dependencies, boolean managed);

    org.eclipse.aether.graph.Dependency toDependency(DependencyCoordinate dependency, boolean managed);

    List<org.eclipse.aether.artifact.Artifact> toArtifacts(Collection<Artifact> artifacts);

    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-impl</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-api</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-spi</artifactId>
    </dependency>
    <dependency>

public class DefaultDependency implements Dependency {

    private final InternalSession session;
    private final org.eclipse.aether.graph.Dependency dependency;
    private final String key;

    public DefaultDependency(
            @Nonnull InternalSession session, @Nonnull org.eclipse.aether.graph.Dependency dependency) {
        this.session = nonNull(session, "session");
        this.dependency = nonNull(dependency, "dependency");

      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-profile</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-model</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>

        final Dependency dependency = new Dependency();
        dependency.setGroupId("org.apache");
        dependency.setArtifactId("apache");
        dependency.setVersion("1");

        assertNotNull(this.newModelResolver().resolveModel(dependency.getDelegate(), new AtomicReference<>()));
        assertEquals("1", dependency.getVersion());
    }

    @Test