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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Using generated union type as response returning empty json ","articleBody":"I have request that returning in response type **Event** defined like:\r\n```\r\n    event:\r\n      oneOf:\r\n        - $ref: '#/components/schemas/eventTypeOnetimeEditableField'\r\n        - $ref: '#/components/schemas/eventTypeRepeatableEditableField'\r\n```\r\nGenerated types are:\r\n```\r\ntype Event struct {\r\n\tunion json.RawMessage\r\n}\r\nfunc (t Event) MarshalJSON() ([]byte, error) {\r\n\tb, err := t.union.MarshalJSON()\r\n\treturn b, err\r\n}\r\n\r\ntype PostDescribeEventById200JSONResponse Event\r\n```\r\nThe problem is  **PostDescribeEventById200JSONResponse** on json marshalling returning empty json \"{}\". This happens because **PostDescribeEventById200JSONResponse** is not using MarshalJSON() of underlying struct **Event**.\r\n\r\nUsing type alias instead of underlying type solving my problem:\r\n```\r\ntype PostDescribeEventById200JSONResponse = Event\r\n```","author":{"url":"https://github.com/idleway","@type":"Person","name":"idleway"},"datePublished":"2023-02-19T17:30:42Z","url":"https://github.com/oapi-codegen/oapi-codegen/issues/970"}