func (v Value) Name() string {
	x, ok := v.data.(name)
	if !ok {
		return ""
	}
	return string(x)
}
func (v Value) Name() string {
	x, ok := v.data.(name)
	if !ok {
		return ""
	}
	return string(x)
}
// Name returns v's name value.
// If v.Kind() != Name, Name returns the empty string.
// The returned name does not include the leading slash:
// if v corresponds to the name written using the syntax /Helvetica,
// Name() == "Helvetica".