test case with legitimate calls to a function called main

semantic/legitimate_call_to_main.java

+class ClassWithNonstaticMain {
+    /* String is a valid type */
+    public void main() { }
+    public void foo() {
+        main();
+    }
+}
+
+class ClassWithStaticVoidMainStringArgs {
+    public static void main(String[] args) {
+       ClassWithNonstaticMain x = new ClassWithNonstaticMain();
+       x.main();
+    }
+}