code: def coord(self, func:CoordFunc, *args, **kwargs)->'Image':
          "Equivalent to `image.flow = func(image.flow, image.size)`."
          self.flow = func(self.flow, *args, **kwargs)
          return self coord(self, func:CoordFunc, *args, **kwargs)->'Image':
          "Equivalent to `image.flow = func(image.flow, image.size)`."
          self.flow = func(self.flow, *args, **kwargs)
          return self
docs: Equivalent to `image.flow = func(image.flow, image.size)`.