code: public static io.grpc.Status.Code toGrpcCode(
        io.opencensus.trace.Status.CanonicalCode opencensusCanonicalCode) {
      return grpcStatusFromOpencensusCanonicalCode(opencensusCanonicalCode).getCode();
    }
docs: Returns a {@link io.grpc.Status.Code} from a {@link io.opencensus.trace.Status.CanonicalCode}.
  
  @param opencensusCanonicalCode the given {@code io.opencensus.trace.Status.CanonicalCode}.
  @return a {@code io.grpc.Status.Code} from a {@code io.opencensus.trace.Status.CanonicalCode}.
  @since 0.6