public void collectDependencies() throws IOException {
        System.out.println("Collecting dependencies of " + this.getFileName());
        ZipFile zipFile = new ZipFile(FileUtils.getFile(uri));

        Enumeration<? extends ZipEntry> entries = zipFile.entries();

        while (entries.hasMoreElements()) {
            ZipEntry entry = entries.nextElement();

            Path entryPath = Paths.get(getName(), "module.xml");

//          System.out.println("EntryName: " + entry.getName() + ";;" + entryPath);

            // filter out other files
            if (!entry.getName().equals(entryPath.toString())) {
                continue;
            }

            System.out.println("Found module.xml: " + entry.getName());

            InputStream stream = zipFile.getInputStream(entry);

            // create a new DocumentBuilderFactory
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

            try {
                // use the factory to create a documentbuilder
                DocumentBuilder builder = factory.newDocumentBuilder();
                Document doc = builder.parse(stream);
                Node dependencies = doc.getElementsByTagName("Dependencies").item(0);
                if (dependencies == null) {
                    // this module has no dependencies
                    continue;
                }
                NodeList dependencyNodes = dependencies.getChildNodes();

                for (int i = 0; i < dependencyNodes.getLength(); i++) {

                    Node node = dependencyNodes.item(i);
                    if (node.getNodeType() == Node.ELEMENT_NODE) {
                        Element elem = (Element) node;

                        // Get the value of the ID attribute.
                        String name = elem.getAttribute("name");
                        String version = elem.getAttribute("version");

                        // Element element = (Element) dependencyNodes.item(i);
                        // String name = element.getAttribute("name");
                        // String version = element.getAttribute("version");
                        addDependency(new ModuleDependencyObject(name, version));
                        System.out.println(this.getFileName() + " depends on " + name + "_" + version);
                    }
                }

            } catch (Exception ex) {
                ex.printStackTrace();
            }

        }
        zipFile.close();
    }