    # File lib/fog/openstack/models/network/subnet.rb, line 31
            def create
              requires :network_id, :cidr, :ip_version
              merge_attributes(service.create_subnet(self.network_id,
                                                        self.cidr,
                                                        self.ip_version,
                                                        self.attributes).body['subnet'])
              self
            end