Extract Function: Support multiple output values

idea/testData/refactoring/extractFunction/controlFlow/outputValues/genericPair.kt.after

@@ -0,0 +1,28 @@
+// WITH_RUNTIME
+// PARAM_TYPES: A?, kotlin.Any?
+// PARAM_TYPES: B, A
+// PARAM_TYPES: kotlin.Int
+// PARAM_DESCRIPTOR: var a: A? defined in foo
+// PARAM_DESCRIPTOR: value-parameter val b: B defined in foo
+// PARAM_DESCRIPTOR: var c: kotlin.Int defined in foo
+// SIBLING:
+fun foo<A: Any, B: A>(b: B): Int {
+    var a: A? = null
+    var c: Int = 1
+
+    val pair = pair(a, b, c)
+    a = pair.first
+    c = pair.second
+
+    return a.hashCode() ?: 0 + c
+}
+
+private fun <A : Any, B : A> pair(a: A?, b: B, c: Int): Pair<A?, Int> {
+    var a1 = a
+    var c1 = c
+    a1 = b
+    c1 += 2
+    println(a1)
+    println(c1)
+    return Pair(a1, c1)
+}