code: static Map<String, Object> fromWire(Map<String, Object> json) {
          return (Map<String, Object>) ObjectIterator.iterate(json, new Closure<ObjectIterator.IterateBean, Object>() {
              @Override
              public Object call(ObjectIterator.IterateBean i) {
                  if (i.getValue() instanceof String) {
                      String s = (String) i.getValue();
                      try{
                          if (s.startsWith("/") && s.endsWith("/")) {
                              s = s.substring(1, s.length() - 1);
                              String type = s.substring(0, s.indexOf("("));
                              String value = s.substring(s.indexOf("(") + 1,
                                      s.lastIndexOf(")"));
                              if ("Date".equalsIgnoreCase(type)) {
                                  return ObjectType.cast(value, Date.class);
                              }
                          }
                      }catch (Throwable e){}
                  }
                  return i.getValue();
              }
          });
      }
docs: Parse simple types into Java Classes
  
  @param json
  @return