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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def refresh(self)->None:
        "Apply any logit, flow, or affine transfers that have been sent to the `Image`."
        if self._logit_px is not None:
            self._px = self._logit_px.sigmoid_()
            self._logit_px = None
        if self._affine_mat is not None or self._flow is not None:
            self._px = _grid_sample(self._px, self.flow, **self.sample_kwargs)
            self.sample_kwargs = {}
            self._flow = None
        return self