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

idea/testData/resolve/references/forLoopIn/inBuiltIns/extension.kt

@@ -0,0 +1,8 @@
+fun main(it: Iterator<Any>) {
+  for (i <caret>in it.iterator()) {}
+}
+
+// MULTIRESOLVE
+// REF: (for Iterator<T> in jet).iterator()
+// REF: (in jet.Iterator).hasNext()
+// REF: (in jet.Iterator).next()

idea/testData/resolve/references/forLoopIn/inBuiltIns/member.kt

@@ -0,0 +1,8 @@
+fun main() {
+  for (i <caret>in 1..2) {}
+}
+
+// MULTIRESOLVE
+// REF: (in jet.IntIterator).next()
+// REF: (in jet.IntRange).iterator()
+// REF: (in jet.Iterator).hasNext()

idea/testData/resolve/references/forLoopIn/inLibrary/extension.kt

@@ -0,0 +1,8 @@
+fun main() {
+  for (i <caret>in "") {}
+}
+
+// MULTIRESOLVE
+// REF: (for jet.CharSequence in kotlin).iterator()
+// REF: (in jet.CharIterator).next()
+// REF: (in jet.Iterator).hasNext()

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()

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

@@ -0,0 +1,17 @@
+fun test(f: Foo) {
+    for(i <caret>in f) {}
+}
+
+trait Foo {
+  fun iterator(): Iterator
+}
+
+trait Iterator {
+  fun next(): Any
+  fun hasNext(): Boolean
+}
+
+// MULTIRESOLVE
+// REF: (in Foo).iterator()
+// REF: (in Iterator).next()
+// REF: (in Iterator).hasNext()

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

@@ -0,0 +1,15 @@
+fun test(f: Foo) {
+    for(i <caret>in f) {}
+}
+
+trait Foo {
+  fun iterator(): Iterator
+}
+
+trait Iterator {
+  fun hasNext(): Boolean
+}
+
+// MULTIRESOLVE
+// REF: (in Foo).iterator()
+// REF: (in Iterator).hasNext()

idea/testData/resolve/references/forLoopIn/unresolvedIterator.kt

@@ -0,0 +1,7 @@
+fun test() {
+  for (x <caret>in Y()) {}
+}
+
+class Y
+
+// REF_EMPTY