[[!comment format=mdwn
 username="picca"
 subject="comment 4"
 date="2015-11-12T19:35:45Z"
 content="""
ok, But I rellay want a Revertable Property.

should I just make a revertable property of the installed Property in order to have

RevertableProperty HasInfo `required` (installed <!> doNothing)
"""]]
