         
         static let uuids: [BluetoothUUID] = [.primaryService, .secondaryService]
         
-        static let length = UUID.length
-        
         /// Attribute Handle
         var handle: UInt16
         

        
        static let uuid: BluetoothUUID = .include
        
        static let length = 20
        
        /// Attribute Handle
        var handle: UInt16
        

        }
        
        init?(attribute: Attribute) {
            
            assert(attribute.permissions == [.read], "Invalid attribute permissions")
            
