module yt776 {
    namespace yt776;
    prefix yt776;

    container box {
        list object {
            key object-id;

            leaf object-id {
                type string;
            }

            leaf-list attributes {
                type string;
                min-elements 1;
                max-elements 2;
            }

            list nested {
                key nested-attribute;
                max-elements 1;

                leaf nested-attribute {
                    type string;
                }
            }
        }

        choice any-of {
            leaf some-leaf {
                type string;
            }
            list some-list {
                key some-leaf;
                min-elements 1;

                leaf some-leaf {
                    type string;
                }
            }
        }
    }
}