Describes the what-if forecast export created using the create_what_if_forecast_export
operation.
See https://www.paws-r-sdk.com/docs/forecastservice_describe_what_if_forecast_export/ for full documentation.
forecastservice_describe_what_if_forecast_export(WhatIfForecastExportArn)
[required] The Amazon Resource Name (ARN) of the what-if forecast export that you are interested in.