Commit Status Publisher in Kotlin DSL

Hi there!

I follow the example in the TeamCity Kotlin API to add a Commit Status Publisher to my build config. The VCS Root was set up with a GitHub connection. The connections works and now I would like to use reuse the access token of this connection for Commit Status Publisher. 

Here the example from the docs:

buildType {
    // Other Build Type settings ...
    features {
        // Other Build Features ...
        commitStatusPublisher {
          vcsRootExtId = "${<VCS root object>.id}" // A VCS root must be specified to use this authentication type
          publisher = github {
            githubUrl = "<GitHub URL, https://api.github.com for github.com>"
            authType = storedToken {
              tokenId = "tc_token_id:*****"
            }
          }
        }    }
}

I wonder where to find the `tokenId` in this case. Where can I find the token id of a GitHub connection?