Runtime APIs. reply method of the EmailMessage object does not exist

What is the name of the domain?

anyhubs.com

What is the issue you’re encountering

Runtime APIs. reply method of the EmailMessage object does not exist

What are the steps to reproduce the issue?

When testing the code in the online editor for Email Workers, I encountered an error stating that the reply method of the EmailMessage object does not exist, even though the documentation mentions it should be available. Is this a bug?

Screenshot of the error