pub fn payment_provider_checkout_start(
root: &mut Value,
app_root: &Path,
runtime_conf_path: Option<&Path>,
provider: &str,
request: PaymentProviderCheckoutRequest,
) -> Result<PaymentProviderCheckoutStart, i32>pub fn payment_provider_checkout_start(
root: &mut Value,
app_root: &Path,
runtime_conf_path: Option<&Path>,
provider: &str,
request: PaymentProviderCheckoutRequest,
) -> Result<PaymentProviderCheckoutStart, i32>