message: Remove ObjectID for embedded documents
diff: @@ -25,6 +25,10 @@ const taskSchema = new mongoose.Schema(
  toObject: {
  transform: function (doc: any, ret: any) {
  ret._id = doc.id;
  + // remove id for embedded documents
  + for (const answer of ret.answers) {
  + delete answer._id;
  + }
  }
  }
  }
  