def __init__(self, verbose_name=None, multiline=False, **kwds):
    super(StringProperty, self).__init__(verbose_name, **kwds)
    self.multiline = multiline
iterate through all files in dirs and
dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/ext/db/__init__.py/StringProperty.__init__--crossover with--dataset/ETHPy150Open CGATOxford/cgat/refactor/cgat_refactor.py/updateFiles