It seems like you're trying to migrate from an older version of Prefect (1.4.1) to Prefect 2. The Prefect 1.x documentation, including API references, might not be readily available at the current Prefect official site, as they have moved on to newer versions.
However, you can try checking for archived versions of the Prefect 1.x documentation via the Internet Archive (Wayback Machine) by entering the old URL there. This might help you retrieve specific API references for the version you are working with.
Another option could be looking into the GitHub repository for Prefect. Often, documentation files are included within the repository or referred to in the README files. You can browse the tags and branches to find files related to the specific version.
Lastly, if there are specific tasks or code snippets you're struggling with in the migration, feel free to describe them here. I can assist by looking up corresponding functionalities or methods in Prefect 2.x documentation and help you update your code.
If you need further steps for any of these approaches, feel free to ask!