"generic.removed" = "generic.removed";
"generic.added" = "generic.added";
"infos.changed" = "infos.changed";
"URL" = "URL";
"CONFERENCE" = "CONFERENCE";
"SUMMARY" = "SUMMARY";
"RRULE" = "RRULE";
"PRIORITY" = "PRIORITY";
"LOCATION" = "LOCATION";
"DESCRIPTION" = "DESCRIPTION";
"DTSTART" = "DTSTART";
"DTEND" = "DTEND";
"TRANSPARENCY" = "TRANSPARENCY";
"CLASSIFICATION" = "CLASSIFICATION";
"ATTACHMENTS" = "ATTACHMENTS";
"ATTENDEES" = "ATTENDEES";