[{id:"#abcdefg123",title:"Doc 1"},{id:"#abcdefg124",title:"Doc 2"},{id:"#abcdefg125",title:"Doc 3"}]

db.collection.aggregate([{$project:{"_id":0}},{$project:{"node":"$$ROOT","cursor":"$id"}},{$group:{"_id":null,"edges":{$push:"$$ROOT"}}}])