syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"ty::ReBound(debruijn,"}]}
source_snippet:             ty::ReBound(debruijn, ty::BoundRegion { var, kind: ty::BoundRegionKind::Anon }) => {
context_before:             // see `BinderLevel` for more details.
context_after:                 let binder = &self.binders[self.binders.len() - 1 - debruijn.index()];