public void setPlacementConstraints(java.util.Collection<PlacementConstraint> placementConstraints) {
        if (placementConstraints == null) {
            this.placementConstraints = null;
            return;
        }

        this.placementConstraints = new com.amazonaws.internal.SdkInternalList<PlacementConstraint>(placementConstraints);
    }
<p>
The placement constraints for the tasks in the service.
</p>

@param placementConstraints
       The placement constraints for the tasks in the service.
aws-java-sdk-ecs/src/main/java/com/amazonaws/services/ecs/model/Service.java