SOLO - Doubt about usage

Hi, first of all thank you for this tool!

I have a question regarding the use of SOLO, I’ve noticed that the method create_doublets is available but not implemented in the tutorial. Just out of curiosity, doublets are simulated already when implementing solo in the basic way?:

adata = anndata.read_h5ad(path_to_anndata)

scvi.model.SCVI.setup_anndata(adata)

vae = scvi.model.SCVI(adata)

**v**ae.train()

solo = scvi.external.SOLO.from_scvi_model(vae)

solo.train()

solo.predict()

Or it is necessary to execute this method create_doublets if we want to use simulated doublets?
Thank you very much in advance!