docs: public static Map zip(List keys, List values, boolean includeNull) {
          Iterator k = keys.iterator();
          Iterator v = values.iterator();
          HashMap hm = new HashMap();
          while (k.hasNext() && v.hasNext()) {
              Object o = k.next();
              Object p = v.next();
              if (includeNull || o != null && p != null) {
                  hm.put(o, p);
              }
          }
          return hm;
      }