Is it possible to somehow call function in different interfaces to combine all results? How to implement
toMetadata
to call all
buildMetadata
function and merge lists?
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interface Meta {
fun buildMetadata(): List<String>
}
interface FeatA : Meta {
override fun buildMetadata(): List<String> = listOf("A")
}
interface FeatB : Meta {
override fun buildMetadata(): List<String> = listOf("B")
}
class ObjC: FeatA, FeatB {
override fun buildMetadata(): List<String> = emptyList()
fun toMetadata(): List<String> // //What to do here to combine all lists (metadata) from interfaces?
}
fun main() {
val c = ObjC()
println(c.toMetadata()) // expecting ["A", "B"]
}
