String group = chat.getPrimaryGroup(sender);
        String groupPrefix = group == null ? "" : chat.getGroupPrefix(sender.getWorld(), group);
        if ((group != null) && ((groupPrefix == null) || (groupPrefix == ""))) {
          groupPrefix = chat.getGroupPrefix((String)null, group);
        }
        String groupSuffix = group == null ? "" : chat.getGroupSuffix(sender.getWorld(), group);
        if ((group != null) && ((groupSuffix == null) || (groupSuffix == ""))) {
          groupSuffix = chat.getGroupSuffix((String)null, group);
        }
        format = format.replace("{prefix}", prefix == null ? "" : prefix.replace("%", "%%"));
        format = format.replace("{suffix}", suffix == null ? "" : suffix.replace("%", "%%"));
        format = format.replace("{group}", group == null ? "" : group.replace("%", "%%"));
        format = format.replace("{groupprefix}", groupPrefix == null ? "" : groupPrefix.replace("%", "%%"));
        format = format.replace("{groupsuffix}", groupSuffix == null ? "" : groupSuffix.replace("%", "%%"));
      } catch (UnsupportedOperationException ignored) {
      }