<s> import transitfeed <EOL> import agency <EOL> import fareattribute <EOL> import route <EOL> import stop <EOL> def GetGtfsFactory ( factory = None ) : <EOL> if not factory : <EOL> factory = transitfeed . GetGtfsFactory ( ) <EOL> factory . UpdateClass ( '<STR_LIT>' , agency . Agency ) <EOL> factory . UpdateClass ( '<STR_LIT>' , fareattribute . FareAttribute ) <EOL> factory . UpdateClass ( '<STR_LIT>' , route . Route ) <EOL> factory . UpdateClass ( '<STR_LIT>' , stop . Stop ) <EOL> return factory </s>
