def doublec(self, j):
        if j < 1 or self.b[j] != self.b[j-1]:
            return False
        return self.cons(j)
Patch class, create class instance mock and attach them to
dataset/ETHPy150Open jamesturk/jellyfish/jellyfish/porter.py/Stemmer.doublec--crossover with--dataset/ETHPy150Open openstack/anvil/anvil/test.py/MockTestCase._patch_class