code: def add_method_drop_down(self, col_number, col_label):
          
          if self.data_type == 'age':
              method_list = vocab.age_methods
          elif '++' in col_label:
              method_list = vocab.pmag_methods
          elif self.data_type == 'result':
              method_list = vocab.pmag_methods
          else:
              method_list = vocab.er_methods
          self.choices[col_number] = (method_list, True)
docs: Add drop-down-menu options for magic_method_codes columns