docs: public static io.grpc.Status toGrpcStatus(io.opencensus.trace.Status opencensusStatus) {
      io.grpc.Status status =
          grpcStatusFromOpencensusCanonicalCode(opencensusStatus.getCanonicalCode());
      if (opencensusStatus.getDescription() != null) {
        status = status.withDescription(opencensusStatus.getDescription());
      }
      return status;
    }