I saw the function rf_mk_crs in the official documentation, but I haven't seen its registration in the code. Why is that? [Code](https://github.com/locationtech/rasterframes/blob/develop/core/src/main/scala/org/locationtech/rasterframes/expressions/package.scala)
I saw the function rf_mk_crs in the official documentation, but I haven't seen its registration in the code. Why is that?
Code