public SavingsPlansPurchaseRecommendationMetadata withGenerationTimestamp(String generationTimestamp) {
        setGenerationTimestamp(generationTimestamp);
        return this;
    }
<p>
The timestamp that shows when the recommendations were generated.
</p>

@param generationTimestamp
       The timestamp that shows when the recommendations were generated.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/SavingsPlansPurchaseRecommendationMetadata.java