public Builder addCards(DriverCard value) {
        if (cardsBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          ensureCardsIsMutable();
          cards_.add(value);
          onChanged();
        } else {
          cardsBuilder_.addMessage(value);
        }
        return this;
      }
<code>repeated .com.alibaba.fastjson2.dubbo.DriverCard cards = 17;</code>
core/src/test/java/com/alibaba/fastjson2/dubbo/GoogleProtobufBasic.java