public java.util.List<String> getSupportedEngineModes() {
        if (supportedEngineModes == null) {
            supportedEngineModes = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return supportedEngineModes;
    }
<p>
The valid DB engine modes.
</p>

@return The valid DB engine modes.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/Parameter.java