def register_model(self, storagemodel:object, modeldefinition = None):
        """ set up an Queueservice for an StorageQueueModel in your  Azure Storage Account
            Will create the Queue if not exist!
        
            required Parameter is:
            - storagemodel: StorageQueueModel(Object)
        """
        if modeldefinition is None:
            
            """ test if queuename already exists """
            if [model for model in self._modeldefinitions if model['queuename'] == storagemodel._queuename]:
                raise NameConventionError(storagemodel._queuename)

            """ test if queuename fits to azure naming rules """
            if not test_azurestorage_nameconventions(storagemodel._queuename, 'StorageQueueModel'):
                raise NameConventionError(storagemodel._queuename)
             
            """ now register model """
            modeldefinition = {
                'modelname': storagemodel.__class__.__name__,
                'queuename': storagemodel._queuename,
                'encrypt': storagemodel._encrypt,
                'queueservice': self._account.create_queue_service()
                }    

            """ encrypt queue service """
            if modeldefinition['encrypt']:

                # Create the KEK used for encryption.
                # KeyWrapper is the provided sample implementation, but the user may use their own object as long as it implements the interface above.
                kek = KeyWrapper(self._key_identifier, self._secret_key) #  Key identifier

                # Create the key resolver used for decryption.
                # KeyResolver is the provided sample implementation, but the user may use whatever implementation they choose so long as the function set on the service object behaves appropriately.
                key_resolver = KeyResolver()
                key_resolver.put_key(kek)                           

                # Set the require Encryption, KEK and key resolver on the service object.
                modeldefinition['queueservice'].require_encryption = True
                modeldefinition['queueservice'].key_encryption_key = kek
                modeldefinition['queueservice'].key_resolver_funcion = key_resolver.resolve_key
            
            self.__create__(modeldefinition)
                
            self._modeldefinitions.append(modeldefinition)

            log.info('model {} registered successfully. Models are {!s}.'.format(modeldefinition['modelname'], [model['modelname'] for model in self._modeldefinitions]))
        else:
            log.info('model {} already registered. Models are {!s}.'.format(modeldefinition['modelname'], [model['modelname'] for model in self._modeldefinitions]))

        pass
set up an Queueservice for an StorageQueueModel in your  Azure Storage Account
            Will create the Queue if not exist!
        
            required Parameter is:
            - storagemodel: StorageQueueModel(Object)