Values.AwsEcsServicePlacementConstraintsDetailsSourceA placement constraint for the tasks in the service.
type nonrec t = {expression : NonEmptyString.t option;A cluster query language expression to apply to the constraint. You cannot specify an expression if the constraint type is distinctInstance.
*)type_ : NonEmptyString.t option;The type of constraint. Use distinctInstance to run each task in a particular group on a different container instance. Use memberOf to restrict the selection to a group of valid candidates. Valid values: distinctInstance | memberOf
*)}