module foo {
    prefix foo;
    namespace "namespace-foo";

    import import-module { prefix imp; revision-date 1970-01-02; } 
    
    grouping grp {
        leaf my-leaf {
            type imp:imp-type;
        }
        
    }
    
    container my-container {
        uses grp;
        uses imp:imp_grp;
    }
    
}