synchronized ( this.sidCache ) {
            try ( DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + server + "[\\PIPE\\lsarpc]", tc) ) {
                // NetApp doesn't like the 'generic' access mask values
                try ( LsaPolicyHandle policyHandle = new LsaPolicyHandle(handle, null, 0x00000001) ) {
                    rpc = new MsrpcQueryInformationPolicy(policyHandle, (short) lsarpc.POLICY_INFO_ACCOUNT_DOMAIN, info);