this.taskValidationProblems = taskValidationProblems;
            this.params = params;
        }

        @Override
        public void visitFile(FileVisitDetails fileDetails) {
            if (!fileDetails.getPath().endsWith(".class")) {
                return;
            }
            List<String> classNames = getClassNames(fileDetails);

                def fvd = Mock(FileVisitDetails) {
                    getRelativePath() >> new RelativePath(true, filename)
                    toString() >> "file '${filename}'"
                }
                visitor.visitFile(fvd)
            }
            fileTree
        }
        copySpec.walk(_) >> { Action it -> it.execute(copySpecResolver) }
    }

    void actions(Closure... actions) {

        def fileTree = new DirectoryFileTree(rootDir, new PatternSet(), NativeServicesTestFixture.getInstance().get(FileSystem), false)
        def visitedFiles = []
        def visitedDirectories = []
        def fileVisitor = [visitFile: { visitedFiles << it }, visitDir: { visitedDirectories << it }] as FileVisitor

        when:
        fileTree.visit(fileVisitor)
        rootDir.deleteDir()

        then:
        visitedFiles.size() == 3

            if (entry.isDirectory()) {
                visitor.visitDir(new DetailsImpl(resource, expandedDir, entry, tar, stopFlag, chmod));
            } else {
                visitor.visitFile(new DetailsImpl(resource, expandedDir, entry, tar, stopFlag, chmod));
            }
        }
    }

    @Override
    public Provider<File> getBackingFileProvider() {
        return tarFileProvider;

        }

        final Set<LocallyAvailableResource> entries = new HashSet<LocallyAvailableResource>();
        findFiles(pattern).visit(new EmptyFileVisitor() {
            @Override
            public void visitFile(FileVisitDetails fileDetails) {
                final File file = fileDetails.getFile();
                // We cannot clean in progress markers, or in progress files here because

        }

        @Override
        void visitDir(FileVisitDetails dirDetails) {
            handleDetails(dirDetails)
        }

        @Override
        void visitFile(FileVisitDetails fileDetails) {
            handleDetails(fileDetails)
        }

        private void handleDetails(FileVisitDetails details) {
            visited += details.getFile()

            public void visitDir(FileVisitDetails dirDetails) {
                dirDetails.getFile();
                hasContent.set(true);
            }

            @Override
            public void visitFile(FileVisitDetails fileDetails) {
                fileDetails.getFile();
                hasContent.set(true);
            }
        });
        return hasContent.get();
    }

    @Override

                Files.walkFileTree(sourceDir, EnumSet.of(FileVisitOption.FOLLOW_LINKS), Integer.MAX_VALUE, new SimpleFileVisitor<Path>() {
                    @Override
                    public FileVisitResult visitFile(Path sourceFile, BasicFileAttributes attributes) throws IOException {
                        Path targetFile = targetDir.resolve(sourceDir.relativize(sourceFile));

            @Override
            void visitDir(FileVisitDetails dirDetails) {
            }

            @Override
            void visitFile(FileVisitDetails fileDetails) {
                files.add(new TestFile(fileDetails.file))
            }
        })
        return files
    }

    private void buildscriptWithDependency(MavenModule module) {

        @Override
        void visitDir(FileVisitDetails dirDetails) {
            Assert.fail()
        }

        @Override
        void visitFile(FileVisitDetails fileDetails) {
            Assert.fail()
        }

        @Override
        void visitCollection(FileCollectionInternal.Source source, Iterable<File> contents) {
            Assert.fail()