      */
     open class var accountSid: String? {
         set {
-            sharedInstance.accountSid = newValue
+            shared.accountSid = newValue
         }
         get {
-            return sharedInstance.accountSid
+            return shared.accountSid
         }
     }
     

     
     - seealso: TwilioLookupResponse
     */
    open static func lookup(_ phoneNumber: String, countryCode: String? = nil, type: String? = nil, addOns: [TwilioAddOn]? = nil, completion: (TwilioLookupResponse?, Error?) -> ()) {
        //TwilioLookup.sharedInstance().lookup(phoneNumber, countryCode: countryCode, type: type, addOns: addOns, completion: completion)
    }
    
    // MARK: -
    // MARK: Private vars
    
    fileprivate static let sharedInstance = TwilioLookup()
    
    fileprivate var accountSid: String?
    fileprivate var accountToken: String?
    
    // MARK: Private implementations
    
    internal func lookup(_ phoneNumber: String, countryCode: String?, type: String?, addOns: [TwilioAddOn]?, completion: @escaping (TwilioLookupResponse?, Error?) -> ()) {
        
        var parameters: [String: Any] = [:]
        

     */
    open class var accountToken: String? {
        set {
            shared.accountToken = newValue
        }
        get {
            return shared.accountToken
        }
    }
    
    // MARK: - Methods
    
    /*open class func lookup(_ phoneNumber: String, countryCode: String? = nil, type: String? = nil, addOns: [TwilioAddOn]? = nil, completion: (TwilioLookupResponse?, Error?) -> ()) {
        TwilioLookup.sharedInstance.lookup(phoneNumber, countryCode: countryCode, type: type, addOns: addOns, completion: completion)
    }*/
    
    // MARK: -
    // MARK: Private vars
    
    public static let shared = TwilioLookup()
    
    internal var accountSid: String?
    internal var accountToken: String?
    
    // MARK: Implementations
    
    /**
     Use this method to lookup on Twilio for a certain phone number. You can also pass the country ISO code and the type.
