def METHOD_NAME(self):
    subtable = self.makeSubtable(14, 0, 5, 0)
    subtable.cmap = {}  # dummy
    subtable.uvsDict = {
        0xFE00: [(0x0030, "zero.slash")],
        0xFE01: [(0x0030, None)],
    }
    fb = FontBuilder(1024, isTTF=True)
    font = fb.font
    fb.setupGlyphOrder([".notdef", "zero.slash"])
    fb.setupMaxp()
    fb.setupPost()
    cmap = table__c_m_a_p()
    cmap.tableVersion = 0
    cmap.tables = [subtable]
    font["cmap"] = cmap
    f = io.BytesIO()
    font.save(f)
    f.seek(0)
    font = ttLib.TTFont(f)
    self.assertEqual(font["cmap"].getcmap(0, 5).uvsDict, subtable.uvsDict)
    f = io.StringIO(newline=None)
    font.saveXML(f, tables=["cmap"])
    ttx = strip_VariableItems(f.getvalue())
    with open(CMAP_FORMAT_14_TTX) as f:
        expected = strip_VariableItems(f.read())
    self.assertEqual(ttx, expected)
    with open(CMAP_FORMAT_14_BW_COMPAT_TTX) as f:
        font.importXML(f)
    self.assertEqual(font["cmap"].getcmap(0, 5).uvsDict, subtable.uvsDict)