code: public static ExtensionMeta mkExtensionMeta(String name, Object... params) {
          List<?> paramList = Arrays.asList(params);
          String paramStr = paramList.isEmpty() ? "" : paramList.stream()
                  .map(t -> t == null ? "" : t.toString()).reduce((l, r) -> l + ", " + r).get();
          String desc = name + "(" + paramStr + ")";
          return new ExtensionMeta(name, desc, paramList);
      }
docs: /