kotlin-stdlib / kotlin.reflect / KTypeProjection / contravariant contravariant Common JVM JS Native 1.0 @JvmStatic fun contravariant ( type : KType ) : KTypeProjection (source) Creates a contravariant projection of a given type, denoted by the in modifier applied to a type. For example, in the type MutableList<in Number> , in Number is a contravariant projection of the type of class Number .