code: @SafeVarargs
      public static @Nonnull JsonObject object(Entry<String,JsonElement>...fields) {
          JsonObject object = new JsonObject();
          object.add(fields);
          return object;
      }
docs: Alternative to using the object() builder that allows you to add {@link Entry} instances.
  @param fields one or more Entry instances (use the field method to create them).
  @return the JsonObject with the entries added.