module foo {
    namespace "foo";
    prefix foo;
    yang-version 1;

    revision "2016-03-18" {
        description "test";
    }

    grouping grouping-1 {
        container container-in-grouping {
        }
    }

    container root {
    }

    augment "/root" {
        uses grouping-1 {
            augment "container-in-grouping" {
                leaf leaf-1 {
                    type string;
                    mandatory true;
                }
            }
        }
    }
}