available, then this will be the most recent version that has been
uploaded.
- I return a Deferred that fires with a (contents, servermap) pair. The
- servermap is updated with MODE_READ. The contents will be the version
- of the file indicated by servermap.best_recoverable_version(). If no
- version is recoverable, the Deferred will errback with
- UnrecoverableFileError.
+ I update an internal servermap with MODE_READ, determine which
+ version of the file is indicated by
+ servermap.best_recoverable_version(), and return a Deferred that
+ fires with its contents. If no version is recoverable, the Deferred
+ will errback with UnrecoverableFileError.
"""
def get_size_of_best_version():