syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"write!(f,"}]}
source_snippet:                 write!(f, "LateNamedAnon({idx:?}, {name})")
context_before:             ty::LateParamRegionKind::NamedAnon(idx, name) => {
context_after:             }