public boolean authorize(String resource, String operation, String region, String key) {
    securityService.authorize(Resource.valueOf(resource), Operation.valueOf(operation), region,
        key);
    return true;
  }
calls used in @PreAuthorize tag needs to return a boolean
geode-web-management/src/main/java/org/apache/geode/management/internal/rest/security/RestSecurityService.java