text: """
  Basic post processor
  """
  #-----------------------------------------------------------------------------
  # Copyright (c) 2013, the IPython Development Team.
  #
  # Distributed under the terms of the Modified BSD License.
  #
  # The full license is in the file COPYING.txt, distributed with this software.
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Imports
  #-----------------------------------------------------------------------------
  
  from ..utils.base import NbConvertBase
  
  
  #-----------------------------------------------------------------------------
  # Classes
  #-----------------------------------------------------------------------------
  class PostProcessorBase(NbConvertBase):
  
      def __call__(self, input):
          """
          See def postprocess() ...
          """
          self.postprocess(input)
  
      def postprocess(self, input):
          """
          Post-process output from a writer.
          """
          raise NotImplementedError('postprocess')
  