erasure return type when unchecked conversion was required deep inside (IDEA-168316)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/explicit2diamond/beforeUncheckedWarning.java

@@ -0,0 +1,19 @@
+// "Replace with <>" "false"
+class Foo<Z> {
+    void foo(final Bar baz) {
+        Z z =  z(new Bar<St<caret>ring>(baz));
+    }
+
+    <P> Bar<P> c(Bar<P> b) {
+        return b;
+    }
+
+    private <X> Z z(Bar<X> b) {
+        return null;
+    }
+}
+
+class Bar<T> {
+    public Bar(Bar<T> v) {
+    }
+}