using Gr4vy;
using Gr4vy.Models.Components;

var sdk = new Gr4vySDK(
    id: "example",
    server: SDKConfig.Server.Sandbox,
    bearerAuthSource: Auth.WithToken(privateKey),
    merchantAccountId: "default"
);

ClickToPaySessionRequest req = new ClickToPaySessionRequest() {
    CheckoutSessionId = "4137b1cf-39ac-42a8-bad6-1c680d5dab6b",
};

var res = await sdk.DigitalWallets.Sessions.ClickToPayAsync(req);

// handle response

{
  "digital_payment_application_id": "<string>",
  "digital_payment_application_name": "<string>"
}