module test1 {  
    namespace "test1:test1";  
    prefix test1 ;  
                  
    organization "";  
    contact "";  
       
    description   
       "Defines basic service types for L3VPN service.";  
       
    revision "2015-12-16" {  
       reference "";  
    }  

    container cont1 {
        container cont2 {
        }
     }

    augment /cont1/cont2 {
       leaf leaf4 {
          type int32;
        }
        container cont1s {
            container cont1s {
            }
        }
    }
}