How to migrate old codes those were used itkAffineGeometryFrame to ITK5.0?

As our old project use itkAffineGeometryFrame in a lot of code files. But itkAffineGeometryFrame is removed in ITK5.0.
How to migrate these codes to ITK5.0?

@Stephen_Aylward I guess you are the best person to answer this.

Hi Mike,

Can you describe a bit more about how you were using it? In particular, do you need that transform on its own, if so, we can restore it. Or were you using it in the SpatialObject hierarchy (in which case you should switch to using the affine ObjectToParentObject transform within the SpatialObject parent-child relationship).