public static Set<DistributedMember> findMembersIncludingLocators(String[] groups,
      String[] members, InternalCache cache) {
    Set<DistributedMember> allMembers = getAllMembers(cache);
    return findMembers(allMembers, groups, members);
  }
Finds all Members (including both servers and locators) which belong to the given arrays of
groups or members.
geode-core/src/main/java/org/apache/geode/management/internal/util/ManagementUtils.java