Github user neykov commented on the issue:
https://github.com/apache/brooklyn-server/pull/754
Suggest we keep the changes for `PolicyConfigApi.get(...)`, making it work
analogously to `EntityConfigApi.get(...)`. The value there can be any object,
so it needs to be encoded as JSON.
@alx Backwards compatibility is debatable. If we used to return plain
strings as `application/json` then obviously this was broken and clients
should've complained. This probably got covered by the libraries used to fetch
the resource, suggesting that making it proper json will actually improve
compatibility with existing clients.
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