code: protected LocalGossipMember selectPartner(List<LocalGossipMember> memberList) {
      LocalGossipMember member = null;
      if (memberList.size() > 0) {
        int randomNeighborIndex = random.nextInt(memberList.size());
        member = memberList.get(randomNeighborIndex);
      } else {
        GossipService.LOGGER.debug("I am alone in this world.");
      }
      return member;
    }
docs: [The selectToSend() function.] Find a random peer from the local membership list. In the case
  where this client is the only member in the list, this method will return null.
  
  @return Member random member if list is greater than 1, null otherwise