lambda/method refs: check functional interface accessibility

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/highlighting/CheckFunctionalInterfaceAccess.java

@@ -0,0 +1,17 @@
+class Outer {
+
+    private interface Inner {
+        void m();
+    }
+
+    void m(Inner i) {}
+}
+
+class Usage {
+    void test(Outer outer) {
+        outer.m(<error descr="'Outer.Inner' has private access in 'Outer'">() -> {}</error>);
+        outer.m(<error descr="'Outer.Inner' has private access in 'Outer'">this::foo</error>);
+    }
+
+    void foo() {}
+}