docs: protected String findDisplayNameFromLocalAccountPerson(ILocalAccountPerson person) {
          Object name = person.getAttributeValue(ILocalAccountPerson.ATTR_DISPLAY_NAME);
          if ((name instanceof String) && !StringUtils.isEmpty((String) name)) {
              return (String) name;
          }
  
          // if display name is not set, just return username.
          return person.getName();
      }