module module-a-dv2 {

    namespace "urn:jmu:params:xml:ns:yang:module-a-dv2";
    prefix dv2;
    
    import module-a {
        prefix a;
    }
    
    description 
        "Contains some deviations to module-a";

    deviation "/a:top/a:type" {   
        deviate add {
            default "admin";
            must "count(.) = 1";   
        }        
    }   
    
}