{"ast_node_type":"function","tokens":[{"end":88,"kind":"keyword","start":0,"text":"pub(crate)"}]}
    pub(crate) fn collect_constraint(&mut self, fr: RegionVid, outlived_fr: RegionVid) {
    /// Add the outlives constraint `fr: outlived_fr` to the set of constraints we need to suggest.
        debug!("Collected {:?}: {:?}", fr, outlived_fr);