Hello,

I have another question, this time about transforms to WGS 84.

It's quite common in geoscience to pick not the just the CRS that a dataset
uses, but also to pick at the same time the matching transform to WGS 84.

For example, when a user picks the 32056 - NAD 27 / Wyoming East Central
CRS, the EPSG database has several possible transformations to WGS 84. One
of them is 1173 - NAD27 to WGS 84 (4) USA - CONUS - onshore.

I couldn't find a way to pass this transform to the CRS.findOperation
method. I do understand that:
- this transform is often not needed, as better methods than using WGS 84
as a hub can be used (NADCON, NTV2, HARN, etc) in many areas
- passing the bounding box technically allows Apache SIS to pick the best
transform for that bounding box

However, in many geoscience applications, the user wants to "pick" this
transform to WGS 84 themselves, and use WGS 84 as transformation hub if no
other method is available.

Does Apache SIS support transforms to WGS 84? Is there a way I can specify
a transform to WGS 84 when I find an operation, especially outside of an
NADCON/NTV2/HARN area?

-Thierry

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