demangle.go
func Filter(name string, options ...Option) string {
	ret, err := ToString(name, options...)
	if err != nil {
		return name
	}
	return ret
}
func Filter(name string, options ...Option) string {
	ret, err := ToString(name, options...)
	if err != nil {
		return name
	}
	return ret
}
// Filter demangles a C++ symbol name, returning the human-readable C++ name.
// If any error occurs during demangling, the input string is returned.