for (CleanupAction action : actions) {
                cleanups.add(new ScopedCleanupAction(baseDir, action));
            }
            return this;
        }

        public CompositeCleanupAction build() {
            return new CompositeCleanupAction(ImmutableList.copyOf(cleanups));
        }
    }

    private static class ScopedCleanupAction implements CleanupAction {
        private final File baseDir;