public void setSizeFlexEligible(Boolean sizeFlexEligible) {
        this.sizeFlexEligible = sizeFlexEligible;
    }
<p>
Determines whether the recommended reservation is size flexible.
</p>

@param sizeFlexEligible
       Determines whether the recommended reservation is size flexible.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/RDSInstanceDetails.java