# File lib/fog/cloudstack/models/compute/security_groups.rb, line 16
        def get(security_group_id)
          if security_group = connection.list_security_groups('id' => security_group_id)["listsecuritygroupsresponse"]["securitygroup"].first
            new(security_group)
          end
        rescue Fog::Compute::Cloudstack::BadRequest
          nil
        end