void () { TextWithMnemonic empty = TextWithMnemonic.EMPTY; assertEquals("", empty.toString()); assertTextWithoutSuffix(empty, ""); assertNoMnemonic(empty); assertSame(empty, TextWithMnemonic.parse("")); assertSame(empty, TextWithMnemonic.fromPlainText("")); assertSame(empty, TextWithMnemonic.fromPlainTextWithIndex("", -1)); assertSame(empty, TextWithMnemonic.parse("(&X)").withMnemonicIndex(-1)); }