docs: function findElementIndex(tableData, rowIndex, colIndex) {
    const cellData = tableData[rowIndex][colIndex];
  
    rowIndex = util.isExisty(cellData.rowMergeWith) ? cellData.rowMergeWith : rowIndex;
    colIndex = util.isExisty(cellData.colMergeWith) ? cellData.colMergeWith : colIndex;
  
    return tableData[rowIndex][colIndex].elementIndex;
  }