title: Convert javax.json.JsonObject to com.fasterxml.jackson.databind.JsonNode
body: <p>I have a <code>javax.json.JsonObject</code> and want to validate it against a JSON schema. So I've found the <code>com.github.fge.json-schema-validator</code>. But it works only with <code>com.fasterxml.jackson.databind.JsonNode</code>. </p>
  
  <p>Is there a way to convert my <code>JsonObject</code> into a <code>JsonNode</code>?</p>