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

@param sizeFlexEligible
       Determines whether the recommended reservation is size flexible.
@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/RDSInstanceDetails.java