def get(self, key, default=None):
        try:
            val = self[key]
        except KeyError:
            return default
        if val == []:
            return default
        return val
Override the default dispatch since we don't need the rest of
dataset/ETHPy150Open kdart/pycopia/aid/pycopia/dictlib.py/MultiValueDict.get--crossover with--dataset/ETHPy150Open agoragames/haigha/haigha/connection.py/ConnectionChannel.dispatch