code: private Response addSpaceACLsToResponse(ResponseBuilder response,
                                              String spaceID,
                                              String storeID)
          throws ResourceException {
          Map<String, String> aclProps = new HashMap<String, String>();
          Map<String, AclType> acls = spaceResource.getSpaceACLs(spaceID,
                                                                 storeID);
          for (String key : acls.keySet()) {
              aclProps.put(key, acls.get(key).name());
          }
          return addPropertiesToResponse(response, aclProps);
      }
docs: Adds the ACLs of a space as header values to the response.