code: def select_io( hash ):
      
      load_cache(True)
      global CACHE_
      res = []
      record_used('cache', hash)
      for d in CACHE_['cache'].get(hash, {}).values():
          d = pickle.loads(d)
          res += [(d['hash'], d['stack'], d['methodname'], d['returnval'], d['args'], d['packet_num'])]
      return res
docs: Returns the relevant i/o for a method whose call is characterized by the hash
  
      :param hash: The hash for the CallDescriptor
  
      :rtype list(tuple( hash, stack, methodname, returnval, args, packet_num )):