[{"_id":ObjectId("61723c7378b6d3a5a02d908e"),"edible":"fruit"},{"_id":ObjectId("6174799f6fdde9eed3f009c4"),"edible":"vegetable"},{"_id":ObjectId("617479c96fdde9eed3f009dd"),"edible":"meat"}]

db.collection.update({_id:ObjectId("61723c7378b6d3a5a02d908e")},[{$set:{edible:{$switch:{branches:[{case:{$eq:["$edible","fruit"]},then:"apple"},{case:{$eq:["$edible","vegetable"]},then:"carrot"}],default:"$edible"}}}}])