How to customize Jackson ObjectMapper?

I am writing a JIRA Server add-on. How can I customize Jackson ObjectMapper, so I could register custom serializers, change date serialization type, etc?

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One way to do it is to have your own implementation of javax.ws.rs.ext.MessageBodyReader and javax.ws.rs.ext.MessageBodyWriter. The package where those implementations reside must be included in the <rest> module descriptor in the atlassian-plugin.xml. In those implementations you can instantiate an ObjectMapper and configure it the way you want.

Any example ? I just want to disable SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS

on Objectmapper

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