The ReturnValue property returned by GetList is an iterator containing the requested calendar information. Each
item (object) in the iterator corresponds to one calendar or calendar entry,
depending on what type
of calendar information was requested:
For calendar requests, each item contains the drive letter
and file name for a single calendar. The format is <DriveLetter>:<FileName>.
For example: "C:Calendar"
For calendar entry requests, each item contains the properties for a single calendar entry. The exact set of properties depends on the type of the entry. For information about which properties are returned for a given type, see section Properties and calendar entry types.