Integrating Custom ElasticSearch Instances to our community.

At our company we have a current search functionality using elasticsearch and are moving over to use lithium community. We know they have a search for forums, discussions etc but we were wondering if we could upload our custom elements like technical documents or knowledge based articles into the community search that would link back to our own site. If the community platform can't support custom elasticsearch templates we have to create our own search service and use webhooks for the community information.

Does anyone know if this is possible?