public org.bwapi.proxy.messages.GameMessages.Bullet buildPartial() {
        org.bwapi.proxy.messages.GameMessages.Bullet result = new org.bwapi.proxy.messages.GameMessages.Bullet(this);
        int from_bitField0_ = bitField0_;
        int to_bitField0_ = 0;
        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
          to_bitField0_ |= 0x00000001;
        }
        result.id_ = id_;
        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
          to_bitField0_ |= 0x00000002;
        }
        result.player_ = player_;
        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
          to_bitField0_ |= 0x00000004;
        }
        result.type_ = type_;
        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
          to_bitField0_ |= 0x00000008;
        }
        if (sourceBuilder_ == null) {
          result.source_ = source_;
        } else {
          result.source_ = sourceBuilder_.build();
        }
        if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
          to_bitField0_ |= 0x00000010;
        }
        if (positionBuilder_ == null) {
          result.position_ = position_;
        } else {
          result.position_ = positionBuilder_.build();
        }
        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
          to_bitField0_ |= 0x00000020;
        }
        result.angle_ = angle_;
        if (((from_bitField0_ & 0x00000040) == 0x00000040)) {
          to_bitField0_ |= 0x00000040;
        }
        result.velocityX_ = velocityX_;
        if (((from_bitField0_ & 0x00000080) == 0x00000080)) {
          to_bitField0_ |= 0x00000080;
        }
        result.velocityY_ = velocityY_;
        if (((from_bitField0_ & 0x00000100) == 0x00000100)) {
          to_bitField0_ |= 0x00000100;
        }
        if (targetBuilder_ == null) {
          result.target_ = target_;
        } else {
          result.target_ = targetBuilder_.build();
        }
        if (((from_bitField0_ & 0x00000200) == 0x00000200)) {
          to_bitField0_ |= 0x00000200;
        }
        if (targetPositionBuilder_ == null) {
          result.targetPosition_ = targetPosition_;
        } else {
          result.targetPosition_ = targetPositionBuilder_.build();
        }
        if (((from_bitField0_ & 0x00000400) == 0x00000400)) {
          to_bitField0_ |= 0x00000400;
        }
        result.removeTimer_ = removeTimer_;
        if (((from_bitField0_ & 0x00000800) == 0x00000800)) {
          to_bitField0_ |= 0x00000800;
        }
        result.exists_ = exists_;
        if (((from_bitField0_ & 0x00001000) == 0x00001000)) {
          to_bitField0_ |= 0x00001000;
        }
        result.isVisible_ = isVisible_;
        result.bitField0_ = to_bitField0_;
        onBuilt();
        return result;
      }