private static bool B(IDeclaredElement element1, IDeclaredElement element2) { IPsiSourceFile element1SourceFile = element1.GetSourceFiles().FirstOrDefault(); IPsiSourceFile element2SourceFile = element2.GetSourceFiles().FirstOrDefault(); if (element1SourceFile == null || element2SourceFile == null) { return(element1.ToString() == element2.ToString()); } return(element1SourceFile.DisplayName == element2SourceFile.DisplayName); }