withBuildUser() option is not right

[dantran]

Describe your use-case which is not covered by existing documentation.

at https://plugins.jenkins.io/build-user-vars-plugin/

options {
     withBuildUser()
}

I think this is pipeline step but not an option setting

Reference any relevant documentation, other materials or issues/pull requests that can be used for inspiration.

No response

Are you interested in contributing to the documentation?

No response