public JSystemPiqi.system_request buildPartial() {
        JSystemPiqi.system_request result = new JSystemPiqi.system_request(this);
        int from_bitField0_ = bitField0_;
        int to_bitField0_ = 0;
        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
          to_bitField0_ |= 0x00000001;
        }
        if (buyItemBuilder_ == null) {
          result.buyItem_ = buyItem_;
        } else {
          result.buyItem_ = buyItemBuilder_.build();
        }
        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
          to_bitField0_ |= 0x00000002;
        }
        if (grantCoinsBuilder_ == null) {
          result.grantCoins_ = grantCoins_;
        } else {
          result.grantCoins_ = grantCoinsBuilder_.build();
        }
        result.bitField0_ = to_bitField0_;
        onBuilt();
        return result;
      }