private List<Statement> processSequence(List<Statement> statements) {
List<Statement> backup = resultSequence;
resultSequence = new ArrayList<>();
processSequenceImpl(statements);
wieldTryCatch(resultSequence);
List<Statement> result =
resultSequence.stream().filter(part -> part != null).collect(Collectors.toList());
resultSequence = backup;
return result;
}
