syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"ty::Region::new_bound("}]}
source_snippet:                     ty::Region::new_bound(
context_before:                     vars.push(ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon));
context_after:                         tcx,