module test5 {
    yang-version 1;
    namespace "urn:simple.container.demo";
    prefix "t1";

    typedef my-custom-string {
        type string {
            pattern "[a-k]*";
            length "5..11";
        }
    }

    typedef my-string-type {
        type my-custom-string {
            length "4..10";
        }
    }

}