code: def set_flow_node_ref_list(self, value):
          
          if value is None or not isinstance(value, list):
              raise TypeError("FlowNodeRefList new value must be a list")
          else:
              for element in value:
                  if not isinstance(element, str):
                      raise TypeError("FlowNodeRefList elements in variable must be of String class")
              self.__flow_node_ref_list = value
docs: Setter for 'flow_node_ref' field.
          :param value - a new value of 'flow_node_ref' field. Must be a list of String objects (ID of referenced nodes).