kpt-grpc-demo/google/cloud/texttospeech/v1/texttospeech_grpc_service_config.json

{
  "methodConfig": [
    {
      "name": [{"service": "google.cloud.texttospeech.v1.TextToSpeech"}],
      "timeout": "300s",
      "retryPolicy": {
        "initialBackoff": "0.100s",
        "maxBackoff": "60s",
        "backoffMultiplier": 1.3,
        "retryableStatusCodes": [
          "UNAVAILABLE",
          "DEADLINE_EXCEEDED"
        ]
      }
    }
  ]
}