def get_key_delivery_url(access_token, ck_id, key_type):
path = '<STR_LIT>'<EOL>full_path = '<STR_LIT>'.join([path, "<STR_LIT>", ck_id, "<STR_LIT>", "<STR_LIT>"])<EOL>endpoint = '<STR_LIT>'.join([ams_rest_endpoint, full_path])<EOL>body = '<STR_LIT>' + key_type + '<STR_LIT>'<EOL>return do_ams_post(endpoint, full_path, body, access_token)<EOL>
Get Media Services Key Delivery URL.

    Args:
        access_token (str): A valid Azure authentication token.
        ck_id (str): A Media Service Content Key ID.
        key_type (str): A Media Service key Type.

    Returns:
        HTTP response. JSON body.