public void setSideAndIdx(final int startInHunk, final boolean beforeSide) {
      myOffsetIdxInHunk = startInHunk;
      myBeforeSide = beforeSide;
      if (myBeforeSide) {
        assert myBeforeAfter.getBefore().size() > myOffsetIdxInHunk || myOffsetIdxInHunk == 0;
      }
      else {
        assert myBeforeAfter.getAfter().size() > myOffsetIdxInHunk || myOffsetIdxInHunk == 0;
      }
    }
public void setSideAndIdx(final int startInHunk, final boolean beforeSide)