module mod1 {

    prefix abc;

    namespace "urn:cesnet:mod1";

    container test {

        leaf test {

            type string;

        }

        leaf-list list {

            type uint8;

        }

    }

    container presence {

        presence "Test1";

        uses login;

    }

    grouping login {

        list login {

            key "user";

            leaf user {

                type string {

                    pattern "[a-zA-Z]+";

                }

            }

            leaf password {

                type string {

                    length "6..255";

                }

            }

        }

    }

}