def stop_gradient(self, stop_layers, bigdl_type="float"):
        """
        stop the input gradient of layers that match the given ```names```
        their input gradient are not computed.
        And they will not contributed to the input gradient computation of
        layers that depend on them.
        :param stop_layers:  an array of layer names
        :param bigdl_type:
        :return:
        """
        callBigDlFunc(bigdl_type, "setStopGradient", self.value, stop_layers)
        return self
stop the input gradient of layers that match the given ```names```
        their input gradient are not computed.
        And they will not contributed to the input gradient computation of
        layers that depend on them.
        :param stop_layers:  an array of layer names
        :param bigdl_type:
        :return: