docs: def update_cell(self, row, col, value):
          """Updates the value of a cell.
  
          :param row: Row number.
          :type row: int
          :param col: Column number.
          :type col: int
          :param value: New value.
  
          Example::
  
              worksheet.update_cell(1, 1, '42')
  
          """
          range_label = '%s!%s' % (self.title, rowcol_to_a1(row, col))
  
          data = self.spreadsheet.values_update(
              range_label,
              params={
                  'valueInputOption': 'USER_ENTERED'
              },
              body={
                  'values': [[value]]
              }
          )
  
          return data