Function noexpand_family 

pub fn noexpand_family(shadowed: &Token) -> Token

Build the no-expand family token shadowing shadowed — the per-token, dump-safe representation of \noexpand <shadowed> (faithful to TeX’s no_expand_flag: the shadowed identity is preserved in the name; the family resolves to \relax meaning). shadowed is an expandable/undefined CS or active token (the only things \noexpand wraps; see is_dont_expandable).