syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"ty::LateParamRegionKind::Anon(idx)"}]}
source_snippet:             ty::LateParamRegionKind::Anon(idx) => write!(f, "LateAnon({idx})"),
context_before:         match *self {
context_after:             ty::LateParamRegionKind::NamedAnon(idx, name) => {