=====================
Empty docblock
=====================
/**
 *
 */
---
(document)

=====================
Docblock w/ no tags
=====================
/**
 * Just a comment
 *
 * more comment here with
 * $variable and special chars: } { @
 */
---
(document (description (text) (text) (text)))

=====================
Tags w/o description
=====================
/**
 * @api
 * @filesource
 * @inheritDoc
 */
---
(document
  (tag (tag_name))
  (tag (tag_name))
  (tag (tag_name)))

=====================
Tags w/ optional description
=====================
/**
 * @ignore
 * @ignore description
 */
---
(document
  (tag (tag_name))
  (tag (tag_name) (description (text))))

=====================
Tags w/ required descriptions
=====================
/**
 * @category description
 * @copyright description
 * @todo description
 */
---
(document
  (tag (tag_name) (description (text)))
  (tag (tag_name) (description (text)))
  (tag (tag_name) (description (text))))