Initializes a new instance of the FileExpiration class that monitors a file or directory for changes.

Initializes a new instance of the FileExpiration class that monitors an array of file paths (to files or directories) for changes.

Initializes a new instance of the FileExpiration class that monitors a file or directory for changes and indicates when change tracking is to begin.

Initializes a new instance of the FileExpiration class that monitors an array of file paths (to files or directories) for changes and specifies a time when change monitoring begins.