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