[R-pkg-devel] import 'as' from another package

[Tim Keitt]

I have

  if (!inherits(x, "RasterLayer")) x <- as(x, "RasterLayer")

in a package and its not finding the coerce definition from the raster
package. I know I need to add an @import roxygen2 directive of some kind,
but I'm not sure the correct syntax. My first try generated a warning that
it was not needed.

What is the correct way to do this? Or does raster need to export this
definition?

THK

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