code: public void created(final UUID createdByEntityId) {
  		if (this.entityId != null) {
  			throw new IllegalStateException("This entity has already been created: entityId = " + entityId);
  		}
  		this.entityId = UUID.randomUUID();
  		this.entityVersion = 1;
  		this.createdByEntityId = createdByEntityId;
  		this.updatedByEntityId = createdByEntityId;
  		this.entityCreatedOn = System.currentTimeMillis();
  		this.entityUpdatedOn = this.entityCreatedOn;
  	}
docs: Call this method when the entity is updated to increment its version and update its lastupdatedByEntityId
  
  @param lastupdatedByEntityId