code: def add(self, fd):
      ev = select.kevent(
          fd, filter=select.KQ_FILTER_READ, flags=select.KQ_EV_ADD
      )
      self._kq.control([ev], 0, 0)
  
imports: import platform
  import select
label_desc: Use image node_id 2 for calling the DarwinProcPoll obj's underlying member method code with example usage: obj.add(fd) without return types