syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"CanonicalVarKind::Region(ui)"}]}
source_snippet:             CanonicalVarKind::Region(ui) => ui,
context_before:             CanonicalVarKind::Ty(CanonicalTyVarKind::General(ui)) => ui,
context_after:             CanonicalVarKind::Const(ui) => ui,