getCellText method
Get the text of a cell at the given row and col.
Implementation
Future<String> getCellText(int row, int col) async {
final resp = await getCellsRange(row, col, row, col);
if (resp.cells.isNotEmpty) {
final v = resp.cells.first.value;
if (v.hasText()) return v.text;
}
return '';
}