Add SpreadWrapper.

Author: k163377

src/main/java/com/fasterxml/jackson/module/kotlin/SpreadWrapper.java

@@ -0,0 +1,10 @@
+package com.fasterxml.jackson.module.kotlin;
+
+import kotlin.reflect.KFunction;
+
+class SpreadWrapper {
+    // Wrapper to avoid costly calls using spread operator.
+    static <T> T call(KFunction<T> function, Object[] args) {
+        return function.call(args);
+    }
+}