sk89q/worldguard — pull request #268 by PhoenixIV (2013-04-04 14:28:41+00:00)
Title: Fixed volume() function for PolygonalRegion

This fix is making use of the contains() method, as a normal
poly-volume-calculation would not return the exact amount of blocks
protected.

I already brought that up over a year ago on the forums and later as a ticket. Now that I've learned to work a very little with Git I thought I'll send a pull-request.