union BasicTest switch(short) {
    case 1:
        long case1;
    case 2:
        sequence<BasicTest> case2;
    default:
        string caseDef;
};

union ForwardTest;
union ForwardTest switch(short) {
    case 1:
        long case1;
    case 2:
        sequence<ForwardTest> case2;
    default:
        string caseDef;
};

union ForwardSeqTest;
typedef sequence<ForwardSeqTest> ForwardSeqTestSeq;
union ForwardSeqTest switch(short) {
    case 1:
        long case1;
    case 2:
        ForwardSeqTestSeq case2;
    default:
        string caseDef;
};

union NestedTestOuter;
typedef sequence<NestedTestOuter> NestedTestOuterSeq;
union NestedTestOuter switch(short) {
    case 1:
        long case1;
    case 2:
        struct NestedTestInner {
            string member1;
            NestedTestOuterSeq member2;
        } case2;
    default:
        string caseDef;
};

interface TestInterface {
};