text: public override void Finish(FieldInfos fis, int numDocs){if (_numDocsWritten != numDocs){throw new Exception("mergeVectors produced an invalid result: mergedDocs is " + numDocs +" but vec numDocs is " + _numDocsWritten + " file=" + _output +"; now aborting this merge to prevent index corruption");}Write(END);NewLine();SimpleTextUtil.WriteChecksum(_output, _scratch);}