def list_certificates(pageSize=None, marker=None, ascendingOrder=None):
    """
    Lists the certificates registered in your AWS account.
    The results are paginated with a default page size of 25. You can use the returned marker to retrieve additional results.
    See also: AWS API Documentation
    
    
    :example: response = client.list_certificates(
        pageSize=123,
        marker='string',
        ascendingOrder=True|False
    )
    
    
    :type pageSize: integer
    :param pageSize: The result page size.

    :type marker: string
    :param marker: The marker for the next set of results.

    :type ascendingOrder: boolean
    :param ascendingOrder: Specifies the order for results. If True, the results are returned in ascending order, based on the creation date.

    :rtype: dict
    :return: {
        'certificates': [
            {
                'certificateArn': 'string',
                'certificateId': 'string',
                'status': 'ACTIVE'|'INACTIVE'|'REVOKED'|'PENDING_TRANSFER'|'REGISTER_INACTIVE'|'PENDING_ACTIVATION',
                'creationDate': datetime(2015, 1, 1)
            },
        ],
        'nextMarker': 'string'
    }
    
    
    """
    pass
