code: def _get_column_change_options(self, fluent):
          
          options = {
              "name": fluent.name,
              "type": self._get_dbal_column_type(fluent.type),
              "default": fluent.get("default"),
          }
  
          if fluent.type in ["string"]:
              options["length"] = fluent.length
  
          return options
docs: Get the column change options.