public Builder setPosition(org.bwapi.proxy.messages.BasicTypes.Position value) {
        if (positionBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          position_ = value;
          onChanged();
        } else {
          positionBuilder_.setMessage(value);
        }
        bitField0_ |= 0x02000000;
        return this;
      }