@staticmethod
  def CreateEtag(data):
    data_crc = zlib.crc32(data)
    return base64.b64encode(str(data_crc))
Turns us into a root node by taking us out of the tree we're in.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver.py/FileDispatcher.CreateEtag--crossover with--dataset/ETHPy150Open fusionbox/django-widgy/widgy/contrib/form_builder/models.py/Form.make_root