code: def flow(self)->FlowField:
          "Access the flow-field grid after applying queued affine transforms."
          if self._flow is None:
              self._flow = _affine_grid(self.shape)
          if self._affine_mat is not None:
              self._flow = _affine_mult(self._flow,self._affine_mat)
              self._affine_mat = None
          return self._flof flow(self)->FlowField:
          "Access the flow-field grid after applying queued affine transforms."
          if self._flow is None:
              self._flow = _affine_grid(self.shape)
          if self._affine_mat is not None:
              self._flow = _affine_mult(self._flow,self._affine_mat)
              self._affine_mat = None
          return self._flow
docs: Access the flow-field grid after applying queued affine transforms.