transformRequest - stack overflow

[GuiRider]

Hi,
I'm trying to override the trasformRequest method to be able to send a dynamic token to the server.

This is what I do:

final DataSource dataSource = DataSource.get(ds, new RequestTransformer() {
@Override
protected Object transformRequest(DSRequest dsRequest) {
return getDefaultTransformResponse(dsRequest);
				  
		}
	}, null);

The datasource is bound to a listgrid.
The first fetch works correctly, the second one returns the following:

java.lang.StackOverflowError: null.

It seems to enter an infinite loop.

Am I doing something wrong?

Thanks