def _last_index(self, s):
        self.set_index(max(0, self._find_one_after_last_labeled_index() - 1))
def testWrapperV2Build(self, wrapper):
    cell = rnn_cell_impl.LSTMCell(10)
    wrapper = wrapper(cell)
    wrapper.build((1,))
    self.assertTrue(cell.built)