Create an `DataBunch` from self, `path` will override `self.path`, `kwargs` are passed to `DataBunch.create`.

def databunch(self, path:PathOrStr=None, bs:int=64, val_bs:int=None, num_workers:int=defaults.cpus,
                  dl_tfms:Optional[Collection[Callable]]=None, device:torch.device=None, collate_fn:Callable=data_collate,
                  no_check:bool=False, **kwargs)->'DataBunch':
        "Create an `DataBunch` from self, `path` will override `self.path`, `kwargs` are passed to `DataBunch.create`."
        path = Path(ifnone(path, self.path))
        data = self.x._bunch.create(self.train, self.valid, test_ds=self.test, path=path, bs=bs, val_bs=val_bs,
                                    num_workers=num_workers, device=device, collate_fn=collate_fn, no_check=no_check, **kwargs)
        if getattr(self, 'normalize', False):#In case a normalization was serialized
            norm = self.normalize
            data.normalize((norm['mean'], norm['std']), do_x=norm['do_x'], do_y=norm['do_y'])
        data.label_list = self
        return data