private void FinalizeRelationships()
{
// In here we supposed to handle all non-typical cases, such as
// 1. Immediate parent is not present among the documents;
// 2. Root of the conversation is not present among the documents;
Tracer.Debug("Threads calculation started.");
var threadsCalculationResults = _threadsProcessor.FinalizeRelationships();
resultsAccumulator.Append(threadsCalculationResults);
// Debug
//Tracer.Warning(resultsAccumulator.ToString());
DontInsertChildlessTopmostNodes(resultsAccumulator.ListToInsert);
// Debug
//Tracer.Warning(resultsAccumulator.ToString());
Tracer.Debug("Threads calculation completed. Starting production: Insert {0}, Update {1}, Delete {2}",
resultsAccumulator.InsertCount, resultsAccumulator.UpdateCount, resultsAccumulator.DeleteCount);
ProduceThreadsRecords();
Tracer.Debug("Threads production completed.");
}