def deregister_event_topic(DirectoryId=None, TopicName=None):
    """
    Removes the specified directory as a publisher to the specified SNS topic.
    See also: AWS API Documentation
    
    
    :example: response = client.deregister_event_topic(
        DirectoryId='string',
        TopicName='string'
    )
    
    
    :type DirectoryId: string
    :param DirectoryId: [REQUIRED]
            The Directory ID to remove as a publisher. This directory will no longer send messages to the specified SNS topic.
            

    :type TopicName: string
    :param TopicName: [REQUIRED]
            The name of the SNS topic from which to remove the directory as a publisher.
            

    :rtype: dict
    :return: {}
    
    
    """
    pass
