Constructs a new Folder object which represents an existing folder in a user's Mailbox.
The Mailbox is specified by mailbox and the location of the folder within the mailbox by folderPath.
TODO: DIsallow simply empty folder name (somewhere)
See Implementation
Constructs a new Folder object which represents an existing folder in a user's Mailbox.
The Mailbox is specified by mailbox and the location of the folder within the mailbox by folderPath.
TODO: DIsallow simply empty folder name (somewhere)