JVM_IR indy-SAM: function reference to Java interface

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/boundLocalExtFun.kt

@@ -0,0 +1,15 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: boundLocalExtFun.kt
+fun box(): String {
+    fun String.k(s: String) = this + s + "K"
+
+    return Sam("O"::k).get("")
+    // NB simply '::k' is a compilation error
+}
+
+// FILE: Sam.java
+public interface Sam {
+    String get(String s);
+}