docs: def processFormData(self, data, dataset_name):
          """Take a string of form data as CSV and convert to insert statements, return template and data values"""
  
          # Get the cols for this dataset
          cols = self.datasets[dataset_name]
          reader = self.getCSVReader(data, reader_type=csv.reader)
  
          # Get fieldnames from first line of reader, what is left is set of rows
          fieldnames = next(reader)
  
          # Check columns
          for col in cols:
              varname = col["varname"]
              if varname not in fieldnames:
                  raise ValueError("Column %s not found in data for dataset %s" % (varname, dataset_name,))
  
          # Now call overrideen methods of base classes to process this data
          self._processDML(dataset_name, cols, reader)