synchronized File pollNext()

in src/main/java/org/apache/maven/plugins/clean/Cleaner.java [395:410]

• 16 lines of code
• 4 McCabe index (conditional complexity)

        synchronized File pollNext() {
            File basedir = filesToDelete.poll();
            if (basedir == null) {
                if (cleaner.session != null) {
                    SessionData data = cleaner.session.getRepositorySession().getData();
                    File lastDir = (File) data.get(LAST_DIRECTORY_TO_DELETE);
                    if (lastDir != null) {
                        data.set(LAST_DIRECTORY_TO_DELETE, null);
                        return lastDir;
                    }
                }
                status = STOPPED;
                notifyAll();
            }
            return basedir;
        }