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

j2k/testData/fileOrElement/overloads/Simple.java

@@ -0,0 +1,22 @@
+class A {
+    void foo(int i, char c, String s) {
+        System.out.println("foo" + i + c + s);
+    }
+
+    void foo(int i, char c) {
+        foo(i, c, "");
+    }
+
+    void foo(int i) {
+        foo(i, 'a', "");
+    }
+
+    int bar(String s) {
+        System.out.println("s = " + s);
+        return 0;
+    }
+
+    int bar() {
+        return bar(null);
+    }
+}