@Test(expected = BlockchainValidationException.class)
public void testFinishingVotingProcessWithNotValidRef() throws FailedVerificationException {

	testVotingProcessForVoteOperation();
	OpOperation finalOp = generateFinalOpWithRef();
	TreeMap<String, Object> refVote = new TreeMap<>();
	refVote.put("vote", Arrays.asList(OP_VOTE, ""));
	finalOp.putObjectValue("ref", refVote);
	blocksManager.addOperation(finalOp);
}