J2K: replace overloads with optional parameters not only for constructors but for methods too

j2k/testData/fileOrElement/overloads/Synchronized.kt

@@ -0,0 +1,14 @@
+class A {
+    public fun foo(p: Int) {
+        println("p = [" + p + "]")
+    }
+
+    synchronized public fun foo() {
+        foo(calcSomething())
+    }
+
+    // this method should be invoked under synchronized block!
+    private fun calcSomething(): Int {
+        return 0
+    }
+}