def METHOD_NAME(empty_font):
    indextable = empty_font["TSI0"]
    indextable.extra_indices[-1] = (0xFFFD, 0x8000, 0)
    content = "0" * (0x8000 + 1)
    data = tobytes(content)
    table = table_T_S_I__1()
    table.decompile(data, empty_font)
    assert table.extraPrograms["fpgm"] == content