code: @Deprecated
      public void setCellMerge(final Table table, final TableAppender appender, final String pos,
                               final int rowMerge, final int columnMerge)
              throws FastOdsException, IOException {
          final Position position = this.positionUtil.getPosition(pos);
          this.setCellMerge(table, appender, position.getRow(), position.getColumn(), rowMerge,
                  columnMerge);
      }
docs: Set the merging of multiple cells to one cell.
  
  @param table       the table
  @param appender    the appender
  @param pos         The cell position e.g. 'A1'
  @param rowMerge    the number of rows to merge
  @param columnMerge the number of cells to merge
  @throws FastOdsException if the row index or the col index is negative
  @throws IOException      if the cells can't be merged