GetCurrentChangeMarker Method
Gets the most current change marker.
procedure GetCurrentChangeMarker(FolderResource: String);
Remarks
This method populates NextChangeMarker with the most current change marker available. Like ListChanges, it may be limited to only changes within a certain FolderResource; and is sensitive to the IncludeDeleted, IncludeMounted, MaxResults, and RecurseSubfolders configuration settings.
FolderResource must be a folder path, an Id-based relative folder path, a folder resource Id, or empty string (the root folder).
Refer to ListChanges for more information.