visitContentsAsFileTrees(child -> child.visit(visitor));
        return this;
    }

    @Override
    public void visitContentsAsFileTrees(Consumer<FileTreeInternal> visitor) {
        visitContents(new FileCollectionStructureVisitor() {
            @Override
            public void visitCollection(Source source, Iterable<File> contents) {
                throw new UnsupportedOperationException("Should not be called");

    }

    /**
     * This is final - override {@link #visitContents(FileCollectionStructureVisitor)} instead to provide the contents.
     */
    @Override
    public final void visitStructure(FileCollectionStructureVisitor visitor) {
        if (visitor.startVisit(OTHER, this)) {
            visitContents(visitor);
        }
    }

    protected void visitContents(FileCollectionStructureVisitor visitor) {

     */
    @Override
    public final Iterator<File> iterator() {
        return getIntrinsicFiles().iterator();
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
        visitor.visitCollection(OTHER, this);
    }

    abstract protected Set<File> getIntrinsicFiles();

        return this;
    }

    private void calculateFinalizedValue() {
        ImmutableList.Builder<FileCollectionInternal> builder = ImmutableList.builder();
        value.visitContents(child -> child.visitStructure(new FileCollectionStructureVisitor() {
            @Override
            public void visitCollection(Source source, Iterable<File> contents) {

        return this;
    }

    @Override
    public void visitContentsAsFileTrees(Consumer<FileTreeInternal> visitor) {
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
    }

    public String getDisplayName() {
        return displayName;
    }

    @Override
    public Set<File> getFiles() {
        return ImmutableSet.of();
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
    }

    @Override
    public FileTreeInternal getAsFileTree() {
        return new EmptyFileTree(FileTreeInternal.DEFAULT_TREE_DISPLAY_NAME);
    }

    @Override

        }
    }

    @Override
    public String getDisplayName() {
        return resolutionHost.displayName("files").getDisplayName();
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
        ResolvedFileCollectionVisitor collectingVisitor = new ResolvedFileCollectionVisitor(visitor);
        getSelectedArtifacts().visitFiles(collectingVisitor, lenient);

        ImmutableList.Builder<FileCollectionInternal> builder = ImmutableList.builder();
        visitChildren(builder::add);
        return builder.build();
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
        visitChildren(child -> child.visitStructure(visitor));
    }

        return this;
    }

    @Override
    public void visitContentsAsFileTrees(Consumer<FileTreeInternal> visitor) {
        visitor.accept(this);
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
        tree.visitStructure(new MinimalFileTree.MinimalFileTreeStructureVisitor() {

            @Override

        return getFiles();
    }

    @Override
    public Iterator<File> iterator() {
        return getIntrinsicFiles().iterator();
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {
        getIntrinsicFiles().visitStructure(visitor);
    }

    @Override
    protected void appendContents(TreeFormatter formatter) {