},
                "grpc.keepalive_timeout_ms": {
                  "int_value": 20000
                }
              }
            }
          },
          "initial_metadata": [
          {{ if .sts }}
          {{ if .gcp_project_id }}
            {
              "key": "x-goog-user-project",
              "value": "{{ .gcp_project_id }}"
            }
          {{ end }}

		GrpcService: &core.GrpcService{
			TargetSpecifier: &core.GrpcService_EnvoyGrpc_{
				EnvoyGrpc: &core.GrpcService_EnvoyGrpc{
					ClusterName: clusterName,
					Authority:   hostname,
				},
			},
			InitialMetadata: []*core.HeaderValue{
				{
					Key:   "lightstep-access-token",
					Value: accessToken,
				},
			},
		},
	}
	return anypb.New(dc)
}