struct struct_t {
	long a, b;
};

typedef long mytype;

interface myinterface {
	long add(in long a, in long b);
	void get_last(out long a, out long b);
	void square(inout long r);
	void message(in string msg);
	void last_message(out string msg);
	void struct_method(in struct_t s, out struct_t ss);
	void obj_method(in myinterface mi, out myinterface mo);
	void mytype_method(in mytype mt, out mytype mtt);
};