Spring Cloud Openfeign Spring Data Pageable is not working when using SNAKE_CASE as property naming strategy

It is nice to see that feign now includes support for Spring Data Pageable. However, on our team we have set SNAKE_CASE as the jackson property naming strategy, for the whole app, and the feature does not work correctly because of it.

I have tried to write a minimal, complete and verifiable example to reproduce the problem. The example includes "mapping totalElements attribute of Page" test, that fail when SNAKE_CASE naming strategy is used: https://github.com/hello-xhemajl/feign-page-mapping-tests.git

It would be appreciated if feign would also support this case.

Comment From: ryanjbaxter

I wonder if you are setting the naming strategy too late, can you try setting the property spring.jackson.property-naming-strategy instead and see if that works?

Comment From: hello-xhemajl

No, even if the property naming strategy is set using spring.jackson.property-naming-strategy at application.properties, mapping of total_elements attribute fails.

Looking at SimplePageImpl, at #103, I can see @JsonProperty("totalElements") long totalElements Does this mean that this does only handle mapping for spring.jackson.property-naming-strategy=LOWER_CAMEL_CASE?