     public var oauth_token: String = String()
     public var oauth_refresh_token: String = String()
     public var oauth_token_secret: String = String()
+    public var oauth_token_expires_date: NSDate = NSDate()
     public internal(set) var oauth_verifier: String = String()
     public var version: Version = .OAuth1
     

        coder.encodeObject(self.oauth_refresh_token, forKey: CodingKeys.oauthRefreshToken)
        coder.encodeObject(self.oauth_token_secret, forKey: CodingKeys.oauthTokenSecret)
        coder.encodeObject(self.oauth_verifier, forKey: CodingKeys.oauthVerifier)
    }
    // } // End NSCoding extension


        static let consumerSecret = base + "consumer_secret"
        static let oauthToken = base + "oauth_token"
        static let oauthRefreshToken = base + "oauth_refresh_token"
        static let oauthTokenExpiresDate = base + "oauth_token_expires_date"
        static let oauthTokenSecret = base + "oauth_token_secret"
        static let oauthVerifier = base + "oauth_verifier"
    }
