docs: public static List<NetworkInterface> getNetworkInterfaces() {
          List<NetworkInterface> networkInterfaces = new LinkedList<NetworkInterface>();
  
          List<String> macs = getItems(EC2_METADATA_ROOT + "/network/interfaces/macs/");
          if (macs != null) {
              for (String mac : macs) {
                  String key = mac.trim();
                  if (key.endsWith("/")) {
                      key = key.substring(0, key.length() - 1);
                  }
                  networkInterfaces.add(new NetworkInterface(key));
              }
          }
          return networkInterfaces;
      }