是否可以在包含特定值的范围内定义字段

Question

我的API包含字段result，其类型为string，但只能包含以下值之一-success或error。如何在Swagger中定义它？

不用说

ServerResponse: #{result: ..., additional-info: ...}
      type: object
      properties: 
        result: 
          type: string #generic type, could be any string
        additional-info: 
          type: string
      required:
        - result
        - additional-info

我想说

ServerResponse: #{result: ..., additional-info: ...}
      type: object
      properties: 
        result: 
          type: 'success' or 'error'#<-- something like this with specific list of possible value
        additional-info: 
          type: string
      required:
        - result
        - additional-info