visitor.visitFileTree(root, patterns, fileTree);
            }

            @Override
            public void visitFileTreeBackedByFile(File file, FileTreeInternal fileTree, FileSystemMirroringFileTree sourceTree) {
                visitor.visitFileTreeBackedByFile(file, fileTree, sourceTree);
            }
        });
    }

    @Override

    }

    @Override
    public void visitStructure(MinimalFileTreeStructureVisitor visitor, FileTreeInternal owner) {
        File backingFile = getBackingFile();
        visitor.visitFileTreeBackedByFile(backingFile, owner, this);
    }

    @Override
    public void visitDependencies(TaskDependencyResolveContext context) {
        context.add(getBackingFileProvider());
    }

        when:
        fileTree.visitStructure(visitor, owner)

        then:
        1 * visitor.visitFileTreeBackedByFile(backingFile, owner, fileTree)
        0 * _
    }

    static class TestArchiveFileTree extends AbstractArchiveFileTree {
        File backingFile
        final String displayName = "<display>"

        override fun visitFileTree(root: File, patterns: PatternSet, fileTree: FileTreeInternal) {
            roots.add(DirectoryTreeSpec(root, patterns))
        }

        override fun visitFileTreeBackedByFile(file: File, fileTree: FileTreeInternal, sourceTree: FileSystemMirroringFileTree) {
            roots.add(toSpec(sourceTree))
        }
    }

    private