syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"CanonicalVarKind::Region(_)"}]}
source_snippet:             CanonicalVarKind::Region(_) => CanonicalVarKind::Region(ui),
context_before:             }
context_after:             CanonicalVarKind::Const(_) => CanonicalVarKind::Const(ui),