Appends additional content to the existing llms.txt file.
The provided content will be added to the end of the current file content.
To reset to Wix's default content instead, set default to true and omit the content field.
You can only call this method when authenticated as a Wix app or Wix user identity.
There is 1 error with this status code.
This method may also return standard errors. Learn more about standard Wix errors.