// set the log handler which by default will use the generic log package
func (s *Serializer) SetLogHandler(handler LogHandler) {
	s.mutex.Lock()
	C.go_raptor_set_log_handler(s.world, unsafe.Pointer(&handler))
	s.mutex.Unlock()
}
// set the log handler which by default will use the generic log package
func (p *Parser) SetLogHandler(handler LogHandler) {
	C.go_raptor_set_log_handler(p.world, unsafe.Pointer(&handler))
}