arango> a1 = db.example.save({ a : 1 });
{ "_id" : "116308/3449537", "_rev" : 3449537 }
arango> db.example.document(a1);
{ "_id" : "116308/3449537", "_rev" : 3449537, "a" : 1 }
arango> db.example.delete(a1);
true
arango> db.example.document(a1);
JavaScript exception in file '(arango)' at 1,12: [ArangoError 1202: document not found: document not found]
!db.example.document(a1);
!           ^