@Deprecated
    public List<String> getObjectPrefixes() {
        return objectPrefixes;
    }
@deprecated This field is not used by S3. It will be removed in the next major version of the
            SDK. See {@link #getFilter()} for the correct way to filter notifications.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/NotificationConfiguration.java