There is a slight difference between official document and source code.

[kunkka19xx]

Hi ESDB team,
Thank you for the great works and detailed documents.
I am following the documentation to implement my service with esdb but I found that there is a slight difference between official document and source code.
Ref:
https://developers.eventstore.com/clients/grpc/appending-events.html#append-your-first-event

In the last example:

1. I can not find the OriginalStreamRevision() method

aopts := esdb.AppendToStreamOptions{
    ExpectedRevision: lastEvent.OriginalStreamRevision(),
}

I got the error told me that:

lastEvent.OriginalStreamRevision undefined (type *esdb.ResolvedEvent has no field or method OriginalStreamRevision)

• Now I don't know how to use/ find the StreamRevision of the lastEvent even checked the package source.

2. And another tiny one is Json Type constant:

undefined: esdb.ContentTypeJson
But with this one I can easily find the alternative (esdb.JsonContentType)

• I hope I can get the solution for the first one.
• Or if my referred documentation was wrong or out of date, could you please provide me a right one.
  Thank you so much

[w1am]

Hey @kunkka19xx,

The OriginalStreamRevision method is provided by the ResolvedEvent struct in the esdb package, so it should be available in your code. Can you verify that you imported the github.com/EventStore/EventStore-Client-Go/v4/esdb package?

For reference, you can also check the source code that we use in the code snippets:

https://github.com/EventStore/EventStore-Client-Go/blob/c29aa7d3ce9c0aadc7d2bfa3dd060f2865efb227/samples/appendingEvents.go#L154

[kunkka19xx]

@w1am
Thank you for your reply.
My import was:

"github.com/EventStore/EventStore-Client-Go/esdb"

after I changed it to v4, it worked !!!