def is_cached(self, link):
        if link is None:
            return False
        elif hasattr(link, 'uri'):
            return link.uri in self.id_map
        else:
            return link in self.id_map
Install or remove crontab for given node type.
dataset/ETHPy150Open deontologician/restnavigator/restnavigator/halnav.py/APICore.is_cached--crossover with--dataset/ETHPy150Open viewfinderco/viewfinder/fabfile.py/install_crontab