Kathrasis is not extendable

[bmaehr]

In Katharsis almost all not-public methods are marked as private instead of protected. If overriding one method it is necessary to duplicate nearly the whole class.

Additionally lines like

module.addResourceInformationBuilder(new AnnotationResourceInformationBuilder(resourceFieldNameTransformer));

or

DefaultResourceInstanceBuilder<?> instanceBuilder = new DefaultResourceInstanceBuilder(resourceClass);

or

return objectMapper.readValue(requestBody, RequestBody.class);

in the middle of the code makes it difficult to extend the framework. You should implement more like the spring-framework is built.