Method category index
directory operations (instance)
still unclassified (instance)
Answer the real file name which holds the file contents, or nil if it does not apply.
open: class mode: mode ifFail: aBlock
Open the receiver in the given mode (as answered by FileStream's class constant methods)
Release the resources used by the receiver that don't survive when reloading a snapshot.
Answer whether the file has already been extracted to disk.