How to use Aspose::Words::MailMerging::MappedDataFieldCollection::virtualized_iterator typedef of Aspose::Words::MailMerging::MappedDataFieldCollection class in C++....Aspose::Words::MailMerging::MappedDataFieldColle::virtualized_iterator...virtualized_iterator typedef using Aspose :: Words :: MailMerging :: MappedDataFieldColle...