def synchronize! updater
      source_hash[updater.filename] = source_hash[updater.filename].synchronize(updater)
    end
def synchronize! updater
      source_hash[updater.filename] = source_hash[updater.filename].synchronize(updater)
    end
Synchronize the workspace from the provided updater.

 @param updater [Source::Updater]
 @return [void]