Can I customize the Jackson ObjectMapper?

Do you know how to customize the ObjectMapper that is used by Jira’s REST plugin module?

The doco for the REST Plugin Module seems to suggest that providers can be injected:

“The REST plugin module scans your plugin for classes annotated with the @Provider and @Path annotation.”

The constructor of my ContextResolver does get called. I was expecting the getContext method to be called during a call to my REST API, but it never is. Do you know why?

public class ObjectMapperContextResolver implements ContextResolver<ObjectMapper> {

    private final ObjectMapper mapper;

    public ObjectMapperContextResolver() {
        this.mapper = createObjectMapper();

    public ObjectMapper getContext(Class<?> type) {
        return mapper;

    private ObjectMapper createObjectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(new Jdk8Module());
        return mapper;