return signatureSpec;
    }

    @Internal
    Buildable getSource() {
        return source;
    }

    @Internal
    @Override
    public TaskDependency getBuildDependencies() {
        return super.getBuildDependencies();
    }

    @Override
    public boolean shouldBePublished() {
        return true;
    }

    /**
     * Generates the signature file.
     *

    def publishArtifact = Stub(PublishArtifact) {
        getName() >> 'name'
        getExtension() >> 'extension'
        getType() >> 'type'
        getFile() >> new File('foo')
        getBuildDependencies() >> taskDependency
    }
    def dependencies = Collections.singleton(Mock(Task))

    NotationParser<Object, IvyArtifact> parser

    def "setup"() {
        def fileResolver = Stub(FileResolver) {

    }

    @Override
    public void builtBy(Object... tasks) {
        buildDependencies.add(tasks);
    }

    @Override
    public TaskDependency getBuildDependencies() {
        return buildDependencies;
    }

    @Override
    public String getName() {
        return name;
    }

    @Internal

                }
                @Override
                Date getDate() {
                    return new Date()
                }
                @Override
                TaskDependency getBuildDependencies() {
                    return new TaskDependency() {
                        @Override
                        Set<? extends Task> getDependencies(Task task) {

                context.add(dependencyConstraint);
            }
        }
    }

    @Override
    @Deprecated
    public TaskDependencyInternal getBuildDependencies() {

        DeprecationLogger.deprecate("Accessing the build dependencies of project dependency '" + getIdentityPath() + "'")

                }

                @Override
                Date getDate() {
                    return new Date()
                }

                @Override
                TaskDependency getBuildDependencies() {
                    return new TaskDependency() {
                        @Override
                        Set<? extends Task> getDependencies(Task task) {

     *
     * @param contents The file set contents for the constructed file collection
     * @param visitTaskDependencies The implementation of visiting dependencies for the constructed file collection's {@link Buildable#getBuildDependencies()}
     * @see org.gradle.api.internal.tasks.TaskDependencyFactory#visitingDependencies(Consumer)
     */

    def publishArtifact = Stub(PublishArtifact) {
        getExtension() >> 'extension'
        getClassifier() >> 'classifier'
        getFile() >> new File('foo')
        getBuildDependencies() >> taskDependency
    }

    NotationParser<Object, MavenArtifact> parser

    def "setup"() {
        def fileResolver = Stub(FileResolver) {
            asNotationParser() >> fileNotationParser

    }

    def "can depend on a buildable"() {
        Buildable buildable = Mock(Buildable)
        TaskDependency otherDependency = Mock(TaskDependency)

        given:
        1 * buildable.getBuildDependencies() >> otherDependency
        1 * otherDependency.getDependencies(task) >> toSet(otherTask)

        when:
        dependency.add(buildable)

        then:

        where:
        [method, role] << [
            ['getResolvedConfiguration()', 'getBuildDependencies()', 'getIncoming().getFiles()', 'getIncoming().getResolutionResult()', 'getResolvedConfiguration()'],
            ['canBeResolved = false', 'canBeResolved = false; canBeConsumed = false']
        ].combinations()
    }