```
data class AdSupportedBook(private val book: B...
# getting-startedu
ursus
05/18/2018, 8:48 PM Copy code
data class AdSupportedBook(private val book: BookImpl) : BookInterface {
override getTotalPages
get = book.getTotalPages
}ursus
05/18/2018, 8:48 PMdata class AdSupportedBook(private val book: BookImpl) : BookInterface {
override getTotalPages
get = book.getTotalPages
}