docs: public static void main(String[] args) {
          if (args.length < 1) {
              System.out.println(
                      "Usage: java twitter4j.examples.user.LookupFriendships [screen name[,screen name..]]");
              System.exit(-1);
          }
          try {
              Twitter twitter = new TwitterFactory().getInstance();
              ResponseList<Friendship> friendships = twitter.lookupFriendships(args[0].split(","));
              for (Friendship friendship : friendships) {
                  System.out.println("@" + friendship.getScreenName()
                          + " following: " + friendship.isFollowing()
                          + " followed_by: " + friendship.isFollowedBy());
              }
              System.out.println("Successfully looked up friendships [" + args[0] + "].");
              System.exit(0);
          } catch (TwitterException te) {
              te.printStackTrace();
              System.out.println("Failed to lookup friendships: " + te.getMessage());
              System.exit(-1);
          }
      }