000003e0  f2 8d bb ab b3 23 09 a1  d1 9c 40 3e e4 84 d3 1c  |.....#....@>....|
000003f0  60 64 5c ff 01 c7 78 69  c2 4a fb e1 c3 d6 f0 57  |`d\...xi.J.....W|
00000400  fa 3a 5f 7a 8b 70                                 |.:_z.p|
>>> Flow 5 (client to server)
00000000  17 03 03 00 35 24 4a 53  55 49 92 7a 21 a2 db 69  |....5$JSUI.z!..i|
00000010  e5 2b 00 29 83 cb 91 32  17 48 73 96 89 d1 b2 11  |.+.)...2.Hs.....|

// error will be ErrNotMangledName.
// This function does not currently support Rust symbol names.
func ToAST(name string, options ...Option) (AST, error) {
	if strings.HasPrefix(name, "_Z") {
		a, err := doDemangle(name[2:], options...)
		return a, adjustErr(err, 2)
	}

	if strings.HasPrefix(name, "___Z") {
		// clang extensions
		block := strings.LastIndex(name, "_block_invoke")