Dependency dependency = new Dependency();

                dependency.setArtifactId(a.getArtifactId());
                dependency.setGroupId(a.getGroupId());
                dependency.setVersion(a.getVersion());
                dependency.setScope(a.getScope());
                dependency.setType(a.getType());
                dependency.setClassifier(a.getClassifier());

        // packaging type.
        for (Dependency dependency : dependencies) {
            String key = dependency.getGroupId() + ":" + dependency.getArtifactId() + ":" + dependency.getVersion()
                    + (dependency.getClassifier() != null ? ":" + dependency.getClassifier() : EMPTY);
            String mKey = m.getGroupId() + ":" + m.getArtifactId() + ":" + m.getVersion();

        // packaging type.
        for (Dependency dependency : dependencies) {
            String key = dependency.getGroupId() + ":" + dependency.getArtifactId() + ":" + dependency.getVersion()
                    + (dependency.getClassifier() != null ? ":" + dependency.getClassifier() : EMPTY);
            String mKey = m.getGroupId() + ":" + m.getArtifactId() + ":" + m.getVersion();

               }""",
            """dependencySubstitution.all { DependencySubstitution dependency ->
                  if (dependency.requested instanceof ModuleComponentSelector && dependency.requested.module == 'lib') {
                     dependency.artifactSelection {
                        selectArtifact('jar', 'jar', null)
                     }
                  }

            dependency('org.springframework:spring-core:2.5.6') {
                exists()
                hasExclude('commons-logging', 'commons-logging')
                noMoreExcludes()
            }
            dependency('commons-dbcp:commons-dbcp:1.4') {
                exists()
                notTransitive()
            }
            dependency('commons-beanutils', 'commons-beanutils', '1.8.3') {

        List<Dependency> deps = new ArrayList<>(depMgmt.getDependencies());
        for (Iterator<Dependency> it = deps.iterator(); it.hasNext(); ) {
            Dependency dependency = it.next();

            if (!("pom".equals(dependency.getType()) && "import".equals(dependency.getScope()))
                    || "bom".equals(dependency.getType())) {
                continue;
            }

  * If using JUnit 5, an explicit `runtimeOnly` dependency on `junit-platform-launcher` is required
  in addition to the existing `implementation` dependency on the test engine.
  * If using JUnit 4, only the existing `implementation` dependency on `junit` 4 is required.
  * If using JUnit 3, a test `runtimeOnly` dependency on `junit` 4 is required in addition to a
  `compileOnly` dependency on `junit` 3.

=====
[.multi-language-sample]

    @Unroll("Selects variant #expectedVariant using custom attribute value #dependencyValue overriding configuration attribute #configurationValue using dependency constraint")
    def "dependency attribute value overrides configuration attribute using dependency constraint"() {
        given:
        repository {
            'org:test:1.0' {
                variant('api') {
                    attribute('custom', 'c1')

    def "dependency of dependency of finalizer is scheduled when another task depends on the dependency"() {
        given:
        Task dependencyOfDependency = task("dependencyOfDependency", type: Async)
        Task dependency = task("dependency", type: Async, dependsOn: [dependencyOfDependency])
        Task finalizer = task("finalizer", type: Async, dependsOn: [dependency])

        for (Iterator<Dependency> it = depMgmt.getDependencies().iterator(); it.hasNext(); ) {
            Dependency dependency = it.next();

            if (!("pom".equals(dependency.getType()) && "import".equals(dependency.getScope()))
                    || "bom".equals(dependency.getType())) {
                continue;
            }

            it.remove();