docs: public void setGroupMembers(List<String> membershipInfo) {
          for (String line : membershipInfo) {
              String[] fields = line.split("\\|");
              if (fields.length < 2) {
                  continue;
              }
              Set<String> users = StringUtils.commaDelimitedListToSet(fields[1]);
              String groupName = fields[0];
              groups.putIfAbsent(groupName, null);
  
              boolean groupAdmin = (3 <= fields.length && "write".equalsIgnoreCase(fields[2])) ? true : false;
              if (groupAdmin) {
                  groupAdmins.put(groupName, users);
              } else {
                  groupMembers.put(groupName, users);
              }
          }
          logger.debug("groups: " + groups);
          logger.debug("admins: " + groupAdmins + ", members: " + groupMembers);
      }