// Class import org.jetbrains.annotations.NotNull import org.jetbrains.annotations.Nullable class Class { fun notNull(a: String): String = "" fun nullable(a: String?): String? = "" NotNull fun notNullWithNN(): String = "" Nullable fun notNullWithN(): String = "" Nullable fun nullableWithN(): String? = "" NotNull fun nullableWithNN(): String? = "" val nullableVal: String? = "" var nullableVar: String? = "" val notNullVal: String = "" var notNullVar: String = "" val notNullValWithGet: String [Nullable] get() = "" var notNullVarWithGetSet: String [Nullable] get() = "" [Nullable] set(v) {} val nullableValWithGet: String? [NotNull] get() = "" var nullableVarWithGetSet: String? [NotNull] get() = "" [NotNull] set(v) {} }