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.