def create_queue_service(self):
        '''
        Creates a QueueService object with the settings specified in the 
        CloudStorageAccount.

        :return: A service object.
        :rtype: :class:`~azure.storage.queue.queueservice.QueueService`
        '''
        try:
            from azure.storage.queue.queueservice import QueueService
            return QueueService(self.account_name, self.account_key,
                                sas_token=self.sas_token,
                                is_emulated=self.is_emulated)
        except ImportError:
            raise Exception('The package azure-storage-queue is required. '
                            + 'Please install it using "pip install azure-storage-queue"')
Creates a QueueService object with the settings specified in the 
        CloudStorageAccount.

        :return: A service object.
        :rtype: :class:`~azure.storage.queue.queueservice.QueueService`