module deviation-module2 {
    yang-version 1;
    namespace test:deviation2;
    prefix On;
    import "Test2" {
        prefix "t";
    }
    deviation /t:ospf {
        description "desc";
        reference "ref";
         deviate add {
            must "/base:system";
            config "false";
         }
    }

    deviation /t:valid/t:invalid-interval {
            description "desc";
            reference "ref";
            deviate not-supported;
    }
}