def removeAll(self):
        self._objectKeyMap.clear()
        self._keyObjectMap.clear()
Bias layer.  For an input shape of [...] x N, this layer adds N bias terms.  E.g., for a 
dataset/ETHPy150Open rwl/muntjac/muntjac/terminal/key_mapper.py/KeyMapper.removeAll--crossover with--dataset/ETHPy150Open bbabenko/simple_convnet/simple_convnet/convnet.py/BiasLayer.__init__