@classmethod
  def _GetRevivableFollowers(cls, followers):
    return [follower.user_id for follower in followers
            if follower.IsRemoved() and not follower.IsUnrevivable()]
Parse the header; may return None if header is invalid
dataset/ETHPy150Open viewfinderco/viewfinder/backend/op/viewfinder_op.py/ViewfinderOperation._GetRevivableFollowers--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webob_0_9/webob/byterange.py/Range.parse