def tearDown(self):
        for observer in self.observers:
            globalLogPublisher.removeObserver(observer)
clears any currently set value for this node
dataset/ETHPy150Open twisted/twisted/twisted/test/test_twistd.py/AppLoggerTests.tearDown--crossover with--dataset/ETHPy150Open manahl/mdf/mdf/nodes.py/MDFNode.clear_value