def url_maps(self):
        raise NotImplementedError()
Scans the given tree and attaches variable data instances (core/ScopeData.py) to every scope (aka function).
dataset/ETHPy150Open tethysplatform/tethys/tethys_apps/base/app_base.py/TethysAppBase.url_maps--crossover with--dataset/ETHPy150Open zynga/jasy/jasy/js/parse/ScopeScanner.py/scan