# File lib/fog/cloudstack/models/compute/security_group_rule.rb, line 26
        def save
          requires :security_group_id, :cidr, :direction

          data = service.send("authorize_security_group_#{self.direction}".to_sym, params)
          job = service.jobs.new(data["authorizesecuritygroup#{self.direction}response"])
          job.wait_for { ready? }
          # durty
          merge_attributes(job.result.send("#{self.direction}_rules").last)
          self
        end