public void addMember(String playerName){
  openInvites.remove(playerName);
  membersAndLastSeen.put(playerName,Long.valueOf(System.currentTimeMillis()));
  if (leader == null) {
    leader=playerName;
  }
  sendGroupChangeEvent();
}

public void addMember ( String playerName ) { openInvites . remove ( playerName ) ; membersAndLastSeen . put ( playerName , Long . valueOf ( System . currentTimeMillis ( ) ) ) ; if ( leader == null ) { leader = playerName ; } sendGroupChangeEvent ( ) ; }
adds a member to the group
