struct S {
    long x;
    sequence<long> seq;
};

typedef sequence<S> SSeq;

typedef sequence<string> StringSeq;

struct S2 {
    sequence<char,10> seq;
};


interface foo {
  S bar( in S s1, inout S s2, out S s3 );
  SSeq bar2( in SSeq s1, inout SSeq s2, out SSeq s3 );
  void bar3( in StringSeq s );
};