<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def forward(self, is_train, req, in_data, out_data, aux):
 """Implements forward computation. is_train : bool, whether forwarding for training or testing. req : list of {'null', 'write', 'inplace', 'add'}, how to assign to out_data. 'null' means skip assignment, etc. in_data : list of NDArray, input data. out_data : list of NDArray, pre-allocated output buffers. aux : list of NDArray, mutable auxiliary states. Usually not used. """

        data = in_data[0]
        label = in_data[1]
        pred = mx.nd.SoftmaxOutput(data, label)
        self.assign(out_data[0], req[0], pred)