@classmethod
  def from_json(cls, state):
    raise NotImplementedError("from_json() not implemented in %s" % cls)
Prepends the home directory to the given filename if it doesn't
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/output_writers.py/OutputWriter.from_json--crossover with--dataset/ETHPy150Open praekelt/python-sshtail/sshtail/utils.py/prepend_home_dir