"AES128-GCM-SHA256"
             ]
            },
            "alpn_protocols": [
             "h2",
             "http/1.1"
            ],
            "tls_certificate_sds_secret_configs": [
             {
              "name": "default",
              "sds_config": {
               "api_config_source": {
                "api_type": "GRPC",