@abstractmethod
    def fit(self, X, y):
Returns a unique name that may be used as either a temporary
dataset/ETHPy150Open dclambert/Python-ELM/elm.py/BaseELM.fit--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/unittest.py/TestCase.mktemp