public List<Dependency> getDependencies() {
        return dependencies;
    }

    @Override
    public List<Dependency> getResolvedDependencies() {
        return resolvedDependencies;
    }

    public void addResolvedDependency(Dependency dependency) {
        dependencies.add(dependency);
        resolvedDependencies.add(dependency);
    }

    @Override
    public List<Dependency> getUnresolvedDependencies() {

  <description>Maven Toolchain model.</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-support</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-toolchain</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-xml</artifactId>

    </dependency>
    <dependency>
      <groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-xml</artifactId>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-api</artifactId>
      <scope>test</scope>

    }

    public static Dependency toDependency(
            org.apache.maven.model.Dependency dependency, ArtifactTypeRegistry stereotypes) {
        ArtifactType stereotype = stereotypes.get(dependency.getType());
        if (stereotype == null) {
            stereotype = new DefaultArtifactType(dependency.getType());
        }

        boolean system = dependency.getSystemPath() != null

			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.codelibs</groupId>
			<artifactId>sai</artifactId>
			<version>${sai.version}</version>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>${junit.version}</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.dbflute.utflute</groupId>

        return create(DependencyCoordinatesFactoryRequest.build(session, dependency));
    }

    @Nonnull
    default DependencyCoordinates create(@Nonnull Session session, Dependency dependency) {
        return create(DependencyCoordinatesFactoryRequest.build(
                session,
                dependency.getGroupId(),
                dependency.getArtifactId(),

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>maven-test</groupId>
        <artifactId>t06-a</artifactId>
        <version>1.0</version>
      </dependency>
      <dependency>
        <groupId>maven-test</groupId>
        <artifactId>t06-b</artifactId>
        <version>1.1</version>
      </dependency>
      <dependency>
        <groupId>maven-test</groupId>

        assertViolations(result, 0, 0, 2);

        assertContains(
                result.getWarnings().get(0),
                "'dependencies.dependency.exclusions.exclusion.groupId' for gid:aid:jar is missing");
        assertContains(
                result.getWarnings().get(1),
                "'dependencies.dependency.exclusions.exclusion.artifactId' for gid:aid:jar is missing");
    }

            xml.append("    <dependencies>\n");
            for (Dependency dependency : dependencies) {
                xml.append("        <dependency>\n");
                xml.append("            <groupId>").append(dependency.groupId).append("</groupId>\n");
                xml.append("            <artifactId>")
                        .append(dependency.artifactId)
                        .append("</artifactId>\n");

     */
    List<Dependency> getUnresolvedDependencies();

    /**
     * Gets the errors that occurred while building the dependency graph.
     *
     * @return The errors that occurred while building the dependency graph, never {@code null}.
     */
    List<Exception> getCollectionErrors();

    /**
     * Gets the errors that occurred while resolving the specified dependency.
     *