Retrieves the in-app messages targeted for the provided endpoint ID.
See https://www.paws-r-sdk.com/docs/pinpoint_get_in_app_messages/ for full documentation.
pinpoint_get_in_app_messages(ApplicationId, EndpointId)
[required] The unique identifier for the application. This identifier is displayed as the Project ID on the Amazon Pinpoint console.
[required] The unique identifier for the endpoint.