@Override
    public Set<File> getFiles() throws ResolveException {
        ResolvedFilesCollectingVisitor visitor = new ResolvedFilesCollectingVisitor();
        visitedArtifacts.select(configuration.getImplicitSelectionSpec()).visitArtifacts(visitor, false);
        resolutionHost.rethrowFailure("files", visitor.getFailures());
        return visitor.getFiles();
    }

    @Override
    @Deprecated

    ResolvedArtifactSet EMPTY = new ResolvedArtifactSet() {
        @Override
        public void visit(Visitor visitor) {
        }

        @Override
        public void visitTransformSources(TransformSourceVisitor visitor) {
        }

        @Override
        public void visitExternalArtifacts(Action<ResolvableArtifact> visitor) {
        }

        @Override

    def fileSystem = Stub(FileSystem)

    def "visiting creates file if visitor queries the file location"() {
        def contentWriter = Mock(Action)
        def generationListener = Mock(Action)
        def tmpDir = tmpDir.createDir("dir")
        def generatedFile = tmpDir.file("file.bin")
        def visitor = Mock(FileVisitor)

    }

    @Override
    public void visit(Visitor visitor) {
        for (ResolvedArtifactSet set : sets) {
            set.visit(visitor);
        }
    }

    @Override
    public void visitTransformSources(TransformSourceVisitor visitor) {
        for (ResolvedArtifactSet set : sets) {
            set.visitTransformSources(visitor);
        }
    }

    @Override

    def normalizer = Mock(FileNormalizer)

    def "visits properties"() {
        when:
        def result = fingerprintInputProperties { visitor ->
            visitor.visitInputProperty("input") { input }
            visitor.visitInputFileProperty(
                "file",
                NON_INCREMENTAL,

        !result.available

        when:
        result.explain(visitor)

        then:
        1 * visitor.node("Could not find C compiler 'cc'. Searched in")
        1 * visitor.startChildren()
        1 * visitor.node(dir1.toString())
        1 * visitor.node(dir2.toString())
        1 * visitor.endChildren()
        0 * visitor._
    }

    def "executable is unavailable when not found in system path"() {

    }

    @Override
    public void visitStructure(MinimalFileTreeStructureVisitor visitor, FileTreeInternal owner) {
        visitor.visitFileTree(dir, patternSet, owner);
    }

    @Override
    public void visit(FileVisitor visitor) {
        visitFrom(visitor, dir, RelativePath.EMPTY_ROOT, new AtomicBoolean());
    }

    /**

        @Override
        public void visit(Visitor visitor) {
            selectedArtifacts.visit(visitor);
        }

        @Override
        public void visitTransformSources(TransformSourceVisitor visitor) {
            selectedArtifacts.visitTransformSources(visitor);
        }

        @Override
        public void visitExternalArtifacts(Action<ResolvableArtifact> visitor) {

            }
        });
    }

    public boolean visitChangesSince(FileSystemSnapshot previous, FileSystemSnapshot current, String propertyTitle, ChangeVisitor visitor) {
        if (previous == current) {
            return true;
        }
        if (previous == FileSystemSnapshot.EMPTY) {

    @Override
    public Set<File> getFiles() {
        LenientFilesAndArtifactResolveVisitor visitor = new LenientFilesAndArtifactResolveVisitor();
        artifactSetResolver.visitArtifacts(getSelectedArtifacts().getArtifacts(), visitor, resolutionHost);
        resolutionHost.rethrowFailure("files", visitor.getFailures());
        return visitor.files;
    }

    @Override
    @Deprecated