def importHelper(self, struct):
        m = StrStrHashMap()
        keysAndValues = struct.get(self.__field)
        for i in range(0, len(keysAndValues), 2):
            m[keysAndValues[i]] = keysAndValues[i+1]
        return m
def __init__(self, gan=None, config=None, trainer=None):
      super().__init__(config=config, gan=gan, trainer=trainer)
      self.d_grads = None
      self.g_grads = None