A RecentFilter::Info class is used to pass information about the tested file to filter().
- contains: Flags indicating which of the following fields need are filled
- uri: the URI of the file being tested
- display_name: the string that will be used to display the file in the recent chooser
- mime_type: the mime type of the file
- applications: the list of applications that have registered the file
- groups: the groups to which the file belongs to
- age: the number of days elapsed since the file has been registered