
module yms-topology {
    yang-version 1;
    namespace urn:topo;
    prefix topo;
    revision 2014-01-01 {
        description "desc";
        reference "ref";
    }
    list node {
        key "node-id";
        leaf node-id{
           type string;
        }
        leaf-list node-prop{
           type string;
        }
        container termination-points{
            leaf number-of-tp {
                type int16;
            }
            list termination-point {
                key "tp-id";
                leaf tp-id {
                    type string;
                }
            }
        }
        choice choice1{
           case case1a{
               leaf leaf1a1{
                   type string;
               }
               leaf leaf1a2{
                   type string;
               }
           }
           case case1b{
               choice choice1b{
                   case case1bi{
                       leaf leaf1bia{
                           type string;
                       }
                       leaf leaf1bib{
                           type string;
                       }
                   }
                   case case1bii{
                       leaf leaf1biia{
                           type string;
                       }
                       leaf leaf1biib{
                           type string;
                       }
                   }
               }
           }
        }
    }
    choice choice2 {
        case case2a {
            leaf leaf2a1 {
                type string;
            }
            leaf leaf2a2 {
                type string;
            }
        }
        case case2b {
            choice choice3b {
                case case2bi {
                    leaf leaf2bia {
                       type string;
                    }
                    leaf leaf2bib {
                       type string;
                    }
                }
                case case3bii {
                   leaf leaf3biia {
                       type string;
                   }
                   leaf leaf3biib {
                      type string;
                   }
                }
            }
        }
    }
}