code: def set_circuit_breakers(self, debug=False):
          
  
          for grid_district in self.mv_grid_districts():
              grid_district.mv_grid.set_circuit_breakers(debug=debug)
  
          logger.info('=====> MV Circuit Breakers relocated')
docs: Calculates the optimal position of the existing circuit breakers
          and relocates them within the graph for all MV grids.
          
          Args
          ----
          debug: bool, defaults to False
              If True, information is printed during process
              
          See Also
          --------
          ding0.grid.mv_grid.tools.set_circuit_breakers