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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_items_to_tree_iter(self, input_dict, treeiter, parent_dict_path=None):
 """ Adds all values of the input dict to self.tree_store :param input_dict: The input dictionary holds all values, which are going to be added. :param treeiter: The pointer inside the tree store to add the input dict :return: """

        if parent_dict_path is None:
            parent_dict_path = []
        self.get_view_selection()
        for key, value in sorted(input_dict.items()):
            element_dict_path = copy.copy(parent_dict_path) + [key]
            if isinstance(value, dict):
                new_iter = self.tree_store.append(treeiter, [key, "", True, element_dict_path])
                self.add_items_to_tree_iter(value, new_iter, element_dict_path)
            else:
                self.tree_store.append(treeiter, [key, value, False, element_dict_path])