{ "Id": {{#with (elementAt (toArray obj.id) 0) as |FirstId|}} {{#if (and FirstId.root FirstId.extension)}} "{{generateUUID (concat (toString FirstId.root) '|' (toString FirstId.extension))}}" {{else if FirstId.root}} {{!--If only root is provided, it is supposed to be unique--}} "{{generateUUID (toString FirstId.root)}}" {{else}} {{!--Generate using obj if no root or id is available--}} "{{generateUUID (toJsonString ..)}}" {{/if}} {{/with}} }