TfractionFitter with 2di histograms

Hi, is it possible to fit two-di histos with TFractionFitter ?
The documentation is ambiguous. By one side, the creator seems only to take TH1* as input, on the other side there are several references here and there to two and also three-di fits.
If it is possible, where can I find an example ?

See duplicate posting <Use of tfractionfitter with 2-di histos