title: Javers ENTITY_INSTANCE_WITH_NULL_ID when using 2 databases
body: <p>I have this exception "ENTITY_INSTANCE_WITH_NULL_ID" when I store data in Postgres (using JPA Lazy Load) and I store javers in MongoDB</p>
  
  <p>Spring Boot: 1.4.0.RELEASE</p>
  
  <p>Sprig Data JPA: 1.4.0.RELEASE </p>
  
  <p>Javers: 2.3.0</p>
  
  <p>I debugged and saw that ID is null if object is a lazy object:
  org.javers.core.metamodel.type.EntityType:88 "Object cdoId = getIdProperty().get(instance);"</p>