public RDSInstanceDetails withDatabaseEngine(String databaseEngine) {
        setDatabaseEngine(databaseEngine);
        return this;
    }
<p>
The database engine that the recommended reservation supports.
</p>

@param databaseEngine
       The database engine that the recommended reservation supports.
@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