/// migrate((db) => { const dao = new Dao(db) const collection = dao.findCollectionByNameOrId("zfbbb4gbdk9dh6k") // add collection.schema.addField(new SchemaField({ "system": false, "id": "ab1nrrnj", "name": "portrait_public", "type": "bool", "required": false, "presentable": false, "unique": false, "options": {} })) return dao.saveCollection(collection) }, (db) => { const dao = new Dao(db) const collection = dao.findCollectionByNameOrId("zfbbb4gbdk9dh6k") // remove collection.schema.removeField("ab1nrrnj") return dao.saveCollection(collection) })