return jsonBuilder()
        .startObject()
          .startObject(TYPE_NAME)
            .startObject("properties")
              .startObject("id")
                .field("type", "string")
                .field("index", "not_analyzed")
              .endObject()
              .startObject("title")
                .field("type", "string")
              .endObject()
              .startObject("price")
                .field("type", "long")
              .endObject()
              .startObject("originalPrice")
                .field("type", "long")
              .endObject()
              .startObject("units")
                .field("type", "nested")
                .startObject("properties")
                  .startObject("size")
                    .field("type", "string")
                    .field("index", "not_analyzed")
                  .endObject()
                  .startObject("price")
                    .field("type", "long")
                  .endObject()
                  .startObject("originalPrice")
                    .field("type", "long")
                  .endObject()
                  .startObject("currency")
                    .field("type", "string")
                    .field("index", "not_analyzed")
                  .endObject()
                  .startObject("stock")
                    .field("type", "long")
                  .endObject()
                .endObject()
              .endObject()
            .endObject()
          .endObject()
        .endObject();