private com.google.protobuf.SingleFieldBuilder<
          org.bwapi.proxy.messages.GameMessages.UpgradeType, org.bwapi.proxy.messages.GameMessages.UpgradeType.Builder, org.bwapi.proxy.messages.GameMessages.UpgradeTypeOrBuilder> 
          getArmorUpgradeFieldBuilder() {
        if (armorUpgradeBuilder_ == null) {
          armorUpgradeBuilder_ = new com.google.protobuf.SingleFieldBuilder<
              org.bwapi.proxy.messages.GameMessages.UpgradeType, org.bwapi.proxy.messages.GameMessages.UpgradeType.Builder, org.bwapi.proxy.messages.GameMessages.UpgradeTypeOrBuilder>(
                  armorUpgrade_,
                  getParentForChildren(),
                  isClean());
          armorUpgrade_ = null;
        }
        return armorUpgradeBuilder_;
      }