### Question:
MultiOperationRecord implements Record, Iterable<Op> { @Override public int hashCode() { int h = 1023; for (Op op : ops) { h = h * 25 + op.hashCode(); } return h; } MultiOperationRecord();  MultiOperationRecord(Iterable<Op> ops); @Override Iterator<Op> iterator(); void add(Op op); int size(); Op.OpKind getOpKind(); @Override void serialize(OutputArchive archive, String tag); @Override void deserialize(InputArchive archive, String tag); @Override boolean equals(Object o); @Override int hashCode();  }### Answer:
@Test public void testEmptyRoundTrip() throws IOException { MultiOperationRecord request = new MultiOperationRecord(); MultiOperationRecord decodedRequest = codeDecode(request); assertEquals(request, decodedRequest); assertEquals(request.hashCode(), decodedRequest.hashCode()); }