Show attachments while using replacement tokens in the feature long description.

Show attachments while using replacement tokens in the feature long description.
In the documentation there is an example that says "{PHOTOID} is the field token that represents the PHOTOID field, which contains the ID of the attachment to display in the feature description." In order to match the example, the layer would need to have a field called PHOTOID which contains the ID of the attachment to display. There isn't any automatic process that the viewer does to retrieve the feature attachment id for a replacement token. 

We would like to request a replacement token for attachment ids.