after.swift

let environment = try Environment.writable(directoryURL: directoryURL)
let database: Database<String, String, Map> = try transaction.open(database: nil)

try environment.write { transaction in
	for (key, value) in ["lorem": "ipsum", "dolor": "sit amet"] {
        try transaction.put(value: value, forKey: key, in: database)
    }
}

try environment.read { transaction in
    print(try transaction.getValue(forKey: "lorem", in: database))
	// Console: "ipsum"
    print(try transaction.values(in: database))
	// Console: ["lorem": "ipsum", "dolor": "sit amet"]
}