syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"br:"}]}
source_snippet:                             br: ty::BoundRegion| {
context_before:                             binder_level_idx: ty::DebruijnIndex,
context_after:                 let (name, kind) = if let Some(name) = br.kind.get_name(tcx) {