# File lib/fog/identity/openstack/v3/models/groups.rb, line 15
          def find_by_id(id)
            cached_group = find { |group| group.id == id }
            return cached_group if cached_group
            group_hash = service.get_group(id).body['group']
            Fog::Identity::OpenStack::V3.group.new(
              group_hash.merge(:service => service)
            )
          end