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

    revision 2016-05-17 {
        description "test";
    }

    container task-container {
        list task {
            key "task-id";

            leaf task-id {
                type string;
            }
            leaf task-mandatory-leaf {
                type string;
                mandatory true;
            }

            container task-data {
                presence "Task data";
                leaf mandatory-data {
                    type string;
                    mandatory true;
                }
                leaf other-data {
                    type string;
                }
                container non-presence-container {
                    container presence-container {
                        presence "presence container";
                        leaf mandatory-leaf {
                            mandatory true;
                            type string;
                        }
                    }
                    container non-presence-container-2 {
                        leaf mandatory-leaf-2 {
                            mandatory true;
                            type string;
                        }
                    }
                    container presence-container-2 {
                        presence "presence container";
                        leaf mandatory-leaf-3 {
                            mandatory true;
                            type string;
                        }
                    }
                }
            }
        }
    }
}