public static void reportStatusLater(HttpHeaders headers,
                                         StreamMessage<DeframedMessage> deframedStreamMessage,
                                         TransportStatusListener transportStatusListener) {
        deframedStreamMessage.whenComplete().handle((unused1, unused2) -> {
            reportStatus(headers, transportStatusListener);
            return null;
        });
    }
Extracts the gRPC status from the {@link HttpHeaders} and delivers the status
to the {@link TransportStatusListener} when the response is completed.
grpc/src/main/java/com/linecorp/armeria/internal/common/grpc/GrpcStatus.java