New returns http client which includes the credentials to access androidpublisher API.

SetTimeout sets dial timeout duration.

VerifySignature verifies in app billing signature.

The Client type implements VerifySubscription method.

DeveloperNotification is sent by a Pub/Sub topic.

SubscriptionNotification has subscription status as notificationType, toke and subscription id to confirm status by calling Google Android Publisher API.

The IABClient type is an interface to verify purchase token.