code: def _get_column_change_options(self, fluent):
          
          options = super(MySQLSchemaGrammar, self)._get_column_change_options(fluent)
  
          if fluent.type == "enum":
              options["extra"] = {
                  "definition": "('{}')".format("','".join(fluent.allowed))
              }
  
          return options
docs: Get the column change options.