new_contents: 
  class Grid:
      """Defines a basic grid in eDisGo
  
      Attributes
      ----------
      _network : Network #TODO: ADD CORRECT REF
          Network which this scenario is associated with
      _voltage_nom : int
          Nominal voltage
      _peak_load : :obj:`float`
          Cumulative peak load of grid
      _peak_generation : :obj:`float`
          Cumulative peak generation of grid
      _grid_district : :obj:`dict`
          Contains information about grid district (supplied region) of grid,
          format: #TODO: DEFINE FORMAT
      """
  
      def __init__(self, **kwargs):
          self._network = kwargs.get('network', None)
          self._voltage_nom = kwargs.get('voltage_nom', None)
          self._peak_load = kwargs.get('peak_load', None)
          self._peak_generation = kwargs.get('peak_generation', None)
          self._grid_district = kwargs.get('grid_district', None)
  
  
  class MVGrid(Grid):
      """Defines a medium voltage grid in eDisGo
  
      Attributes
      ----------
      _mv_disconn_points : :obj:`list` of
          Medium voltage disconnecting points = points where MV rings are split under
          normal operation conditions (= switch disconnectors in DINGO).
      """
  
      def __init__(self, **kwargs):
          self._mv_disconn_points = kwargs.get('mv_disconn_points', None)
  
  
  # TODO: Go on here..
  
  
subject: add classdefs Grid and MVGrid