Какова лучшая обертка C# в свободном доступе для БИТОВ? [закрытый]

Версия Swift:

FIRApp.configure()

// Creating a second app to create user without logging in
FIRApp.configure(withName: "CreatingUsersApp", options: FIRApp.defaultApp()!.options)

if let secondaryApp = FIRApp(named: "CreatingUsersApp") {
    let secondaryAppAuth = FIRAuth(app: secondaryApp)
    secondaryAppAuth?.createUser(...)
}