private string LogCreatedConcepts(MacroEvaluator macroEvaluator, IConceptInfo conceptInfo, IEnumerable <IConceptInfo> macroCreatedConcepts, DslContainer.AddNewConceptsReport newConceptsReport)
{
var report = new StringBuilder();
report.Append(macroEvaluator.Name + " on " + conceptInfo.GetShortDescription()
+ " created: " + string.Join(", ", macroCreatedConcepts.Select(c => c.GetShortDescription())) + ".");
var newUniqueIndex = new HashSet <string>(newConceptsReport.NewUniqueConcepts.Select(c => c.GetKey()));
LogConcepts(report, "New resolved", newConceptsReport.NewlyResolvedConcepts.Where(c => newUniqueIndex.Contains(c.GetKey())));
LogConcepts(report, "Old resolved", newConceptsReport.NewlyResolvedConcepts.Where(c => !newUniqueIndex.Contains(c.GetKey())));
LogConcepts(report, "New unresolved", newConceptsReport.NewUniqueConcepts.Where(c => _dslContainer.FindByKey(c.GetKey()) == null));
return(report.ToString());
}