new inference: initial tests

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting8/IDEA57446.java

@@ -0,0 +1,7 @@
+abstract class A<T>{
+    abstract void foo(T x);
+    class B extends A<B> {
+        @Override
+        void foo(A<T>.B x) {}
+    }
+}