69         let mut reqs: Vec<&str> = p.required().map(|r| &**r).collect();  in create_help_usage()  localVariable
70         reqs.sort();  in create_help_usage()
71         reqs.dedup();  in create_help_usage()
72         get_required_usage_from(p, &reqs, None, None, false)  in create_help_usage()
324     reqs: &[&'a str],  in get_required_usage_from()
331         reqs,  in get_required_usage_from()
380     for a in reqs {  in get_required_usage_from()
381         get_requires!(a, flags, iter, new_reqs, reqs);  in get_required_usage_from()
382         get_requires!(a, opts, iter, new_reqs, reqs);  in get_required_usage_from()
383         get_requires!(a, positionals, values, new_reqs, reqs);  in get_required_usage_from()
384         get_requires!(@group a, new_reqs, reqs);  in get_required_usage_from()
417     desc_reqs.extend_from_slice(reqs);  in get_required_usage_from()