public ITargetStream AddTargetIntoSubLevel(SymbolName article, ITargetValues values, IProcessConfig config)
{
uint articleCode = article.Code;
IPayrollArticle targetArticle = config.FindArticle(articleCode);
uint conceptCode = targetArticle.ConceptCode();
IPayrollConcept targetConcept = config.FindConcept(conceptCode);
IBookParty addParty = targetConcept.GetTargetParty(LastParty());
var retTuple = TargetsTupleComposer.AddTargetBySymbol(Targets(),
addParty, article, values, config);
var nextFacts = retTuple.Item2;
var nextIndex = retTuple.Item1;
var nextParty = targetConcept.GetNextTargetParty(nextIndex);
return(new TargetStream(nextFacts, nextParty, nextIndex));
}