private static StackTraceElementProto serializeStackTraceElement(StackTraceElement element) {
        final StackTraceElementProto.Builder builder =
                StackTraceElementProto.newBuilder()
                                      .setClassName(element.getClassName())
                                      .setMethodName(element.getMethodName())
                                      .setLineNumber(element.getLineNumber());
        if (element.getFileName() != null) {
            builder.setFileName(element.getFileName());
        }
        return builder.build();
    }
Extracts the gRPC status from the {@link HttpHeaders} and delivers the status
to the {@link TransportStatusListener} immediately.
grpc/src/main/java/com/linecorp/armeria/internal/common/grpc/GrpcStatus.java