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Return a MappingJacksonValue from a REST Controller

Return a MappingJacksonValue from a REST Controller

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A proof of concept can be seen below:

@GetMapping("...")public MappingJacksonValue fooMethod(...)             throws JsonProcessingException {   List foos = ...;   MappingJacksonValue wrapper = new MappingJacksonValue(fooa);   ...   return wrapper;}
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