public void setRecommendationId(String recommendationId) {
        this.recommendationId = recommendationId;
    }
<p>
The unique identifier for the recommendation set.
</p>

@param recommendationId
       The unique identifier for the recommendation set.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/SavingsPlansPurchaseRecommendationMetadata.java