Zend_Reflection_Docblock_Tag provides reflection for
individual annotation tags. Most tags consist of only a name and a
description. In the case of some special tags, the class provides a
factory method for retrieving an instance of the appropriate class.
The following methods are defined for
factory($tagDocblockLine): instantiate the appropriate tag reflection class and return it.
getName(): return the annotation tag name.
getDescription(): return the annotation description.