syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"GenericArgKind::Lifetime(lt)"}]}
source_snippet:                 GenericArgKind::Lifetime(lt) => match (ignore_regions, lt.kind()) {
context_before:             match arg.kind() {
context_after:                     (CheckRegions::FromFunction, ty::ReBound(di, reg)) => {