code: def apply_inheritance(self):
          
          self.apply_partial_inheritance('exclude')
          for i in self:
              self.get_customs_properties_by_inheritance(i)
  
          # And now apply inheritance for unresolved properties
          # like the dateranges in fact
          for timeperiod in self:
              self.get_unresolved_properties_by_inheritance(timeperiod)
docs: The only interesting property to inherit is exclude
  
          :return: None