class StreamlineEventImpl extends ForwardingMap<String, Object> implements StreamlineEvent {

    public final void clear() {
        throw new UnsupportedOperationException();
    }

    private  StreamlineEventImpl();
    private  StreamlineEventImpl(Map<String, Object> keyValues, String dataSourceId, Map<String, Object> header,
                                String sourceStream, Map<String, Object> auxiliaryFieldsAndValues);

}