Values.EstimateByTimeSourceAn estimate that's associated with a time period.
type nonrec t = {usageCost : Double.t option;The amount of cost or usage that's measured for the cost estimate.
*)pricingUnit : PricingUnit.t option;The unit of measurement that's used for the cost estimate.
*)unit : Double.t option;The number of pricing units used to calculate the total number of hours. For example, 1 unit equals 1 hour.
*)currency : Currency.t option;The currency of the estimate in USD.
*)timePeriod : TimePeriod.t option;The period of time, in days, that an estimate covers. The period has a start date and an end date. The start date must come before the end date.
*)}