Navigation to iterator(), next(), hasNext() through 'in' in for-loops

idea/testData/resolve/references/forLoopIn/inSource/allExtensions.kt

@@ -0,0 +1,16 @@
+fun test(f: Foo) {
+    for(i <caret>in f) {}
+}
+
+trait Foo
+fun Foo.iterator(): Iterator
+
+trait Iterator
+
+fun Iterator.next(): Any
+fun Iterator.hasNext(): Boolean
+
+// MULTIRESOLVE
+// REF: (for Foo in <root>).iterator()
+// REF: (for Iterator in <root>).next()
+// REF: (for Iterator in <root>).hasNext()