From phpDocumentor:
> functions and methods without a `return` value, `@return` tag MAY be omitted here, in which case `@return` void is implied.

But ok, i'll remove it

from [rfc2119](http://www.ietf.org/rfc/rfc2119.txt):

> MAY   This word, or the adjective "OPTIONAL", mean that an item is
   truly optional.  One vendor may choose to include the item because a
   particular marketplace requires it or because the vendor feels that
   it enhances the product while another vendor may omit the same item.