[BUG] [ASCIIDOC] Description of classes is not processed with asciidoc generator

We have some classes with tag annotations.

@Tag(name = "Service Name", description = "Description Text.")

We receive a generated yaml file with this information.

openapi: 3.0.1
...
tags:
- name: Service Name
  description: Description Text.
...

We use this file with the "asciidoc" Generator. Now we missing the "description" information in the output (the name is displayed).

The part of the template (index.mustache) looks like this:

== Endpoints

[.{{baseName}}]
=== {{baseName}}

{{{description}}}

{{#operation}}

...

{{{description}}} has no output.

== Endpoints

[.ServiceName]
=== ServiceName

[.methodname]
==== methodname

...

Tested with openapi-generator.version: 6.2.1 and 6.3.0

Are there any clues as to what we are doing wrong or is it a bug?

Start with the Asciidoc generator's index.mustache template and compare how the generated YAML represents tag names and descriptions. Reproduce the issue with the shown @Tag annotation and OpenAPI document, then verify that the generated Asciidoc includes the tag description while preserving the existing name output.