public boolean visit(Project project, int rowIndex, Row row) {
Object value = row.getCellValue(cellIndex);
if (ExpressionUtils.isNonBlankData(value)) {
Cell cell = row.getCell(cellIndex);
if (previousCell != null && cell.value.equals(previousCell.value)) {
CellChange cellChange = new CellChange(rowIndex, cellIndex, cell, null);
cellChanges.add(cellChange);
}
previousCell = cell;
} else {
previousCell = null;