def get_biases(self):
        raise NotImplementedError(
            str(type(self)) + " does not implement "
            "get_biases (perhaps because the class has no biases).")
Return a list of string reprs from a nested list of referrers.
dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/models/mlp.py/Layer.get_biases--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/cherrypy/cherrypy/lib/gctools.py/ReferrerTree.format