@Override
  public String[] getRoles() {
    Set roles = internalId.getRoles();
    String[] roleNames = new String[roles.size()];
    Iterator iter = roles.iterator();
    for (int i = 0; i < roleNames.length; i++) {
      Role role = (Role) iter.next();
      roleNames[i] = role.getName();
    }
    return roleNames;
  }
Wrap the internal stats with impls of {@link StatisticResource}
geode-core/src/main/java/org/apache/geode/admin/internal/SystemMemberImpl.java