def update_document_default_version(Name=None, DocumentVersion=None):
    """
    Set the default version of a document.
    See also: AWS API Documentation
    
    
    :example: response = client.update_document_default_version(
        Name='string',
        DocumentVersion='string'
    )
    
    
    :type Name: string
    :param Name: [REQUIRED]
            The name of a custom document that you want to set as the default version.
            

    :type DocumentVersion: string
    :param DocumentVersion: [REQUIRED]
            The version of a custom document that you want to set as the default version.
            

    :rtype: dict
    :return: {
        'Description': {
            'Name': 'string',
            'DefaultVersion': 'string'
        }
    }
    
    
    """
    pass
