 }
 
 public struct DefaultsDoubleBridge: DefaultsBridge {
+
+    public init() {}
+
     public func save(key: String, value: Double?, userDefaults: UserDefaults) {
         userDefaults.set(value, forKey: key)
     }

}

public struct DefaultsStringBridge: DefaultsBridge {
    public func save(key: String, value: String?, userDefaults: UserDefaults) {
        userDefaults.set(value, forKey: key)
    }

}

public struct DefaultsUrlBridge: DefaultsBridge {

    public init() {}

    public func save(key: String, value: URL?, userDefaults: UserDefaults) {
        userDefaults.set(value, forKey: key)
    }
