code: def cmdline_params(self, structure_file_name, surface_sample_file_name):
          
          parameters = []
  
          parameters += [structure_file_name]
          parameters += [surface_sample_file_name]
  
          pm_dict = self.get_dict()
  
          # replace sampling method string by number
          pm_dict['sampling_method'] = sampling_methods[pm_dict[
              'sampling_method']]
  
          # order matters here!
          for key in [
                  'accessible_surface_area',
                  'sampling_density',
                  'output_surface',
                  'target_volume',
                  'sampling_method',
                  'cubic_target',
          ]:
              parameters.append(pm_dict[key])
  
          return map(str, parameters)
docs: Synthesize command line parameters
  
          e.g. [ ['struct.cssr'], ['struct.vsa'], [2.4]]