code: def set_outgoing(self, value):
          
          if not isinstance(value, list):
              raise TypeError("OutgoingList new value must be a list")
          for element in value:
              if not isinstance(element, str):
                  raise TypeError("OutgoingList elements in variable must be of String class")
          self.__outgoing_list = value
docs: Setter for 'outgoing' field.
          :param value - a new value of 'outgoing' field. Must be a list of IDs (String type) of outgoing flows.