Function get_sdkms_dataset 

pub fn get_sdkms_dataset(
    sdkms_url: String,
    dataset_id: String,
    app_id: Uuid,
    cert: Arc<List<Certificate>>,
    key: Arc<Pk>,
    ca_cert_list: Option<Arc<List<Certificate>>>,
    ca_crl: Option<Arc<Crl>>,
) -> Result<Blob, String>