def navigation(self, id=None):
        def wrapper(f):
            self.register_element(id or f.__name__, f)
            return f

        return wrapper
Transforms parse_tree to object graph representing model in a
dataset/ETHPy150Open mbr/flask-nav/flask_nav/__init__.py/Nav.navigation--crossover with--dataset/ETHPy150Open igordejanovic/textX/textx/model.py/parse_tree_to_objgraph