def _list_outputs(self):
    outputs = super(Gennlxfm, self)._list_outputs()
    outputs['output_grid'] = re.sub('.(nlxfm|xfm)$', '_grid_0.mnc', outputs['output_file'])
    return outputs
def _list_outputs(self):
    outputs = super(Gennlxfm, self)._list_outputs()
    outputs['output_grid'] = re.sub('.(nlxfm|xfm)$', '_grid_0.mnc', outputs['output_file'])
    return outputs