The above XML is valid and it results in adding all of the non-standard attributes to the component decoration tag.
Adobe documentation mentions that properties other than 'cq:tagName' and 'class' will be added as HTML attributes with the same String value as provided.
https://helpx.adobe.com/experience-manager/6-4/sites/developing/using/decoration-tag.html
The HtmlTag should have support for additional properties. It should be possible to produce the following XML using the HtmlTag annotation:
The above XML is valid and it results in adding all of the non-standard attributes to the component decoration tag. Adobe documentation mentions that properties other than 'cq:tagName' and 'class' will be added as HTML attributes with the same String value as provided. https://helpx.adobe.com/experience-manager/6-4/sites/developing/using/decoration-tag.html