Supported simplest case of signatures propagation in value parameter position.

#KT-2776 in progress

compiler/testData/loadJava/kotlinSignature/propagation/parameter/NotNullToNullable.java

@@ -0,0 +1,18 @@
+package test;
+
+import org.jetbrains.annotations.NotNull;
+import jet.runtime.typeinfo.KotlinSignature;
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+
+public interface NotNullToNullable {
+
+    public interface Super {
+        void foo(@NotNull String p);
+    }
+
+    public interface Sub extends Super {
+        @ExpectLoadError("Auto type 'jet.String' is not-null, while type in alternative signature is nullable: 'String?'")
+        @KotlinSignature("fun foo(p: String?)")
+        void foo(String p);
+    }
+}