// C string to Go string
	func C.GoString(*C.char) string

	// C data with explicit length to Go string
	func C.GoStringN(*C.char, C.int) string

	// C data with explicit length to Go []byte
	func C.GoBytes(unsafe.Pointer, C.int) []byte

As a special case, C.malloc does not call the C library malloc directly
but instead calls a Go helper function that wraps the C library malloc

        HandleGuid guid2 = new HandleGuid();
        
        assertNotEquals(guid1, guid2);
        assertEquals(16, guid1.toBytes().length);
        
        // Test round-trip
        HandleGuid guid3 = new HandleGuid(guid1.toBytes());
        assertEquals(guid1, guid3);
    }
    
    @Test
    public void testHandleInfoExpiration() {
        HandleInfo info = new HandleInfo(