code: def format_row(self, row):
          
          res = []
          headers = getattr(self, 'headers', [])
          for column in headers:
              column_name = column['name']
              value = row.get(column_name, '')
              if hasattr(self, "format_%s" % column_name):
                  value = getattr(self, "format_%s" % column_name)(value)
              res.append(value)
          return res
docs: The render method expects rows as lists, here we switch our row format
          from dict to list respecting the order of the headers