Test for nullability annotations generalized and generated

compiler/testData/asJava/lightClasses/nullabilityAnnotations/PrivateInTrait.kt

@@ -0,0 +1,7 @@
+// PrivateInTrait
+
+trait PrivateInTrait {
+    private val nn: String
+    private val n: String?
+    private fun bar(a: String, b: String?): String?
+}